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English Synonyms for Suffix -ible Vocabulary Words – Online Quiz!

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Identify the synonyms of Suffix -ible words in this online English synonyms quiz. Find the closest synonym for 44 vocabulary words. For each word, choose the option with the same or closest meaning. Review your scorecard with red/green highlights to spot mistakes and track improvement.

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Which word is a synonym for accessible?
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Easily approachable, reachable, or available.

It describes objects, places, or ideas that can be reached, entered, or understood without difficulty or barriers. Accessibility implies that there are no significant obstacles or limitations preventing individuals from accessing or utilizing something. In the context of physical spaces, an accessible building or facility is designed to accommodate people with disabilities and provide equal access to all individuals. Similarly, in the realm of information or technology, an accessible website or document is designed to be usable and understandable by people of diverse abilities, including those with visual, auditory, or cognitive impairments. Overall, "accessible" signifies a quality of inclusivity, openness, and ease of use, enabling individuals to engage with and participate in various aspects of life without hindrance or exclusion.

Complete Vocabulary List for Suffix -ible with Meanings, Synonyms, Examples, and Quiz Questions

accessible (adjective) /ækˈsɛs ə bəl/
Meaning: It describes objects, places, or ideas that can be reached, entered, or understood without difficulty or barriers.
Find the synonym: Which option is closest in meaning to accessible?
Options: available; inaccessible; unreachable; unapproachable
Answer: available
Synonyms: approachable; attainable; available; convenient; easy; obtainable; open; reachable; unrestricted
Example: "The website's content is easily accessible and well-organized."

audible (adjective) /ˈɔ də bəl/
Meaning: It describes sounds, noises, or voices that are loud enough or clear enough to be detected or comprehended by the human ear.
Find the synonym: Which option is closest in meaning to audible?
Options: heard; inaudible; silent; noiseless
Answer: heard
Synonyms: clear; detectable; discernible; distinct; evident; hearable; loud; noticeable; obvious; perceptible; recognizable; resounding
Example: "The sound of the crashing waves was audible from miles away."

compatible (adjective) /kəmˈpæt ə bəl/
Meaning: It implies that the different elements or components are well-suited for each other and can interact or cooperate effectively.
Find the synonym: Which option is closest in meaning to compatible?
Options: harmonious; incompatible; discordant; conflicting
Answer: harmonious
Synonyms: adaptable; agreeable; aligned; amicable; coherent; complementary; congruent; cooperative; fitting; harmonious; matching; suitable
Example: "The new software update is compatible with both Windows and Mac operating systems."

comprehensible (adjective) /ˌkɒm prɪˈhɛn sə bəl/
Meaning: It indicates that information, language, or concepts are presented in a way that is accessible, logical, and capable of being comprehended by others.
Find the synonym: Which option is closest in meaning to comprehensible?
Options: understandable; unclear; incomprehensible; confusing
Answer: understandable
Synonyms: accessible; clear; cogent; coherent; fathomable; graspable; intelligible; legible; lucid; perceivable; transparent; understandable
Example: "The document was written in a way that made it easily comprehensible to all readers."

credible (adjective) /ˈkrɛdəbəl/
Meaning: When applied to information, sources, or claims, credibility suggests that they are reliable and likely to be accurate or true.
Find the synonym: Which option is closest in meaning to credible?
Options: believable; dubious; unbelievable; untrustworthy
Answer: believable
Synonyms: believable; compelling; conceivable; conclusive; convincing; plausible; reliable; tenable
Example: "The scientist presented credible evidence to support the hypothesis."

crucible (noun) /ˈkrusəbəl/
Meaning: In this sense, a crucible is a situation or event that tests one's character, beliefs, or values, often resulting in profound change or growth.
Find the synonym: Which option is closest in meaning to crucible?
Options: trial; ease; comfort; relief
Answer: trial
Synonyms: adversity; challenge; difficulty; hardship; ordeal; struggle; suffering; test; trial; tribulation
Example: "The war was a crucible for many soldiers, testing their bravery and resilience."

digestible (adjective) /daɪdʒestɪbəl/
Meaning: When used to describe food, it implies that the food is easily processed and absorbed by the body, allowing for efficient digestion and nutrient extraction.
Find the synonym: Which option is closest in meaning to digestible?
Options: absorbable; indigestible; inedible; complex
Answer: absorbable
Synonyms: absorbable; assimilable; coherent; comprehensible; edible; graspable; ingestible; intelligible; manageable; palatable; readable; understandable
Example: "This book provides complex scientific concepts in a digestible manner for readers of all backgrounds."

eligible (adjective) /ˈɛlɪdʒɪbl/
Meaning: This can refer to a person who meets the qualifications for a job or a scholarship, or someone who meets the legal requirements for marriage or voting.
Find the synonym: Which option is closest in meaning to eligible?
Options: qualified; ineligible; unqualified; disqualified
Answer: qualified
Synonyms: allowed; appropriate; authorized; capable; entitled; fitting; permissible; qualified; suitable
Example: "She is eligible for a scholarship due to her high grades."

fallible (adjective) /ˈfalɪb(ə)l/
Meaning: When we characterize something as fallible, we acknowledge its inherent imperfection and the potential for it to falter or err in judgment, action, or performance.
Find the synonym: Which option is closest in meaning to fallible?
Options: error-prone; infallible; flawless; perfect
Answer: error-prone
Synonyms: deficient; errant; erring; faulty; flawed; frail; human; impaired; imperfect; inaccurate; inadequate; incorrect
Example: "He acknowledged that he was fallible and that he could make mistakes."

feasible (adjective) /ˈfi zə bəl/
Meaning: It implies that a particular idea, plan, or course of action is practical, realistic, and can be implemented successfully.
Find the synonym: Which option is closest in meaning to feasible?
Options: possible; impossible; impractical; unachievable
Answer: possible
Synonyms: accomplishable; achievable; attainable; doable; executable; possible; practical; realistic; realizable; viable; workable
Example: "It's not feasible to finish the entire project in one day."

flexible (adjective) /ˈflɛk sə bəl/
Meaning: When applied to objects or materials, it implies their ability to change form, stretch, or be molded to different shapes or positions without damage or permanent alteration.
Find the synonym: Which option is closest in meaning to flexible?
Options: adaptable; rigid; inflexible; stiff
Answer: adaptable
Synonyms: accommodating; adaptable; adjustable; easygoing; elastic; fluid; malleable; pliable; resilient; supple; versatile
Example: "She is a flexible gymnast, capable of contorting her body into various positions."

foible (noun) ˈfɔɪb(ə)l/
Meaning: The adjective "ersatz" is used to describe something that is a substitute or imitation, often intended to resemble or replace something else, but ultimately lacking in authenticity or genuine quality.
Find the synonym: Which option is closest in meaning to foible?
Options: weakness; strength; virtue; asset
Answer: weakness
Synonyms: abnormality; blemish; defect; failing; fault; frailty; imperfection; limitation; shortcoming
Example: "One of his foibles is his tendency to always tap his foot when nervous."

fungible (adjective) /ˈfʌn(d)ʒɪbl/
Meaning: In fungible items, individual units are essentially indistinguishable and can be exchanged or substituted for one another without any loss of value or quality.
Find the synonym: Which option is closest in meaning to fungible?
Options: exchangeable; unique; irreplaceable; distinct
Answer: exchangeable
Synonyms: barterable; commutable; commutative; convertible; equivalent; exchangeable; interchangeable; negotiable; reciprocal; replaceable; substitutable; switchable
Example: "Money is a fungible asset because one dollar is interchangeable with another."

gullible (adjective) /ˈɡʌlɪbl/
Meaning: When a person is labeled as gullible, it implies that they are prone to believing things without questioning their accuracy or authenticity, often making them vulnerable to manipulation or deceit.
Find the synonym: Which option is closest in meaning to gullible?
Options: naive; skeptical; discerning; shrewd
Answer: naive
Synonyms: credulous; exploitable; foolish; innocent; naive; simple; susceptible; trusting; unsuspecting
Example: "He's incredibly gullible, often falling for the most obvious lies."

horrible (adjective) /ˈhɔr ə bəl/
Meaning: It conveys a deep and intense feeling of horror or terror.
Find the synonym: Which option is closest in meaning to horrible?
Options: dreadful; wonderful; pleasant; delightful
Answer: dreadful
Synonyms: abominable; appalling; awful; dreadful; frightful; ghastly; hideous; horrific; nauseating; repulsive; revolting; terrible
Example: "The movie was so horrible that I couldn't even finish watching it."

illegible (adjective) /ɪˈlɛdʒɪbl/
Meaning: When we label something as illegible, we imply that the text or handwriting is so unclear or distorted that it becomes extremely difficult or impossible to comprehend.
Find the synonym: Which option is closest in meaning to illegible?
Options: unreadable; legible; clear; readable
Answer: unreadable
Synonyms: crabbed; faint; indecipherable; indistinct; obscure; scrawled; unclear; unintelligible; unreadable
Example: "The handwriting on the doctor's prescription was completely illegible."

implausible (adjective) /ɪmˈplɔ zə bəl/
Meaning: An implausible statement, scenario, or explanation seems highly unlikely or improbable based on common sense, evidence, or established knowledge.
Find the synonym: Which option is closest in meaning to implausible?
Options: unbelievable; plausible; credible; believable
Answer: unbelievable
Synonyms: doubtful; fantastical; improbable; inconceivable; incredible; preposterous; questionable; unbelievable; unlikely; unrealistic
Example: "Winning the lottery twice in a row is an implausible occurrence."

inaudible (adjective) /ɪnˈɔ də bəl/
Meaning: When describing a sound or a voice as inaudible, it implies that it is not perceptible to the human ear or that it requires significant effort to discern.
Find the synonym: Which option is closest in meaning to inaudible?
Options: silent; audible; loud; clear
Answer: silent
Synonyms: faint; hushed; indistinct; low; muffled; muted; noiseless; silent; soft; soundless; unheard; whispery
Example: "The distant chirping of birds was almost inaudible amidst the bustling city noises."

incontrovertible (adjective) /ˌɪnkɒntrəˈvəːtɪb(ə)l/
Meaning: When a fact, argument, or piece of evidence is labeled as incontrovertible, it means that it is so clear, certain, and self-evident that it cannot be reasonably questioned, challenged, or refuted.
Find the synonym: Which option is closest in meaning to incontrovertible?
Options: indisputable; debatable; disputable; questionable
Answer: indisputable
Synonyms: absolute; certain; clear; conclusive; evident; indisputable; irrefutable; manifest; sure; unarguable; unassailable; undeniable
Example: "The sunrise's beauty was incontrovertible, painting the sky with shades of gold and crimson."

incorrigible (adjective) /ɪnˈkɒrɪdʒɪb(ə)l/
Meaning: When someone is labeled as incorrigible, it implies that their actions, habits, or tendencies are deeply ingrained and seem immune to intervention or rehabilitation.
Find the synonym: Which option is closest in meaning to incorrigible?
Options: unchangeable; reformable; correctable; amendable
Answer: unchangeable
Synonyms: confirmed; diehard; habitual; hardened; hopeless; incurable; intractable; intransigent; inveterate; irredeemable; obstinate; recidivist
Example: "She had an incorrigible love for sweets, which always overpowered her dieting plans."

indelible (adjective) /ɪnˈdɛlɪb(ə)l/
Meaning: When applied to memories, experiences, or impressions, it signifies that they have left an enduring mark on a person's consciousness, making them unforgettable or deeply ingrained in one's mind.
Find the synonym: Which option is closest in meaning to indelible?
Options: permanent; erasable; temporary; fleeting
Answer: permanent
Synonyms: enduring; ineffaceable; ineradicable; inerasable; inexpungible; inextinguishable; ingrained; lasting; memorable; permanent; persistent; unforgettable
Example: "The memory of that day was indelible in her mind."

indestructible (adjective) /ɪndɪstrʌktɪbəl/
Meaning: It conveys an exceptional level of durability, resilience, and resistance to external forces or conditions.
Find the synonym: Which option is closest in meaning to indestructible?
Options: unbreakable; fragile; perishable; destructible
Answer: unbreakable
Synonyms: durable; enduring; imperishable; impervious; infallible; invincible; resilient; sturdy; tough; unbreakable; unconquerable
Example: "The diamond is known for its indestructible nature and resistance to scratches."

inedible (adjective) /ɪnˈɛd ə bəl/
Meaning: When an item is deemed inedible, it implies that consuming it could result in negative consequences for one's health or well-being.
Find the synonym: Which option is closest in meaning to inedible?
Options: unpalatable; edible; palatable; tasty
Answer: unpalatable
Synonyms: foul; indigestible; inpalatable; noxious; poisonous; rancid; repulsive; toxic; unappetizing; uneatable; uningestible; unwholesome
Example: "The inedible mushroom should never be consumed as it is toxic."

infallible (adjective) /ɪnˈfalɪbl/
Meaning: When we characterize something as infallible, it suggests a level of perfection and reliability that is beyond doubt or criticism.
Find the synonym: Which option is closest in meaning to infallible?
Options: flawless; fallible; imperfect; error-prone
Answer: flawless
Synonyms: accurate; faultless; flawless; impeccable; meticulous; perfect; precise; scrupulous; unerring
Example: "Recent events have shown that experts are far from infallible."

inflexible (adjective) /ɪnˈflɛk sə bəl/
Meaning: It suggests a lack of flexibility, adaptability, or willingness to deviate from established rules, methods, or opinions.
Find the synonym: Which option is closest in meaning to inflexible?
Options: rigid; flexible; adaptable; malleable
Answer: rigid
Synonyms: adamant; immovable; intractable; intransigent; invariable; obdurate; rigid; rigorous; stiff; stubborn; unbending; unyielding
Example: "Her inflexible mindset prevented her from considering alternative solutions."

intangible (adjective) /ɪnˈtæn dʒə bəl/
Meaning: Instead, intangible things typically pertain to abstract concepts, emotions, or qualities that exist in thought, feeling, or idea form.
Find the synonym: Which option is closest in meaning to intangible?
Options: ethereal; tangible; material; physical
Answer: ethereal
Synonyms: abstract; conceptual; elusive; ethereal; immaterial; impalpable; incorporeal; nonphysical
Example: "Love is an intangible emotion that shapes our lives."

invincible (adjective) /ɪnˈvɪn sə bəl/
Meaning: It implies a state of indomitable strength and resilience, showcasing an unbeatable or unassailable nature.
Find the synonym: Which option is closest in meaning to invincible?
Options: unbeatable; vulnerable; defeatable; weak
Answer: unbeatable
Synonyms: bulletproof; impregnable; indefatigable; indomitable; indubitable; infallible; resolute; unassailable; unbeatable; unconquerable; unstoppable; unyielding
Example: "The superhero appeared invincible as he effortlessly thwarted all of his enemies' attacks."

irascible (adjective) /ɪˈrasɪb(ə)l/
Meaning: It implies someone who is prone to displaying anger, or getting easily irritated or annoyed, often over small or insignificant things.
Find the synonym: Which option is closest in meaning to irascible?
Options: touchy; easy-going; patient; unflappable
Answer: touchy
Synonyms: captious; crabby; fractious; irritable; narky; prickly; testy; tetchy; touchy; waspish
Example: "Despite his impressive accomplishments, he had an irascible temperament that made collaboration difficult."

irreducible (adjective) /ˌɪrɪˈdjuːsɪbl/
Meaning: This word is commonly used to describe a situation, problem, or concept that cannot be easily resolved or broken down into smaller parts.
Find the synonym: Which option is closest in meaning to irreducible?
Options: fundamental; reducible; simplifiable; diminishable
Answer: fundamental
Synonyms: essential; immutable; inalienable; inalterable; indivisible; inexorable; inherent; intrinsic
Example: "The political situation was characterized by an irreducible complexity of cultural, social, and economic factors."

irresistible (adjective) /ˌɪrɪˈzɪstɪbl/
Meaning: When applied to a person, object, or situation, it signifies an overwhelming attraction or charm that exerts a powerful and almost uncontrollable influence.
Find the synonym: Which option is closest in meaning to irresistible?
Options: captivating; resistible; unappealing; repulsive
Answer: captivating
Synonyms: alluring; compelling; compulsive; enticing; inescapable; inviting; overpowering; tempting
Example: "The aroma of freshly baked cookies was irresistible, drawing everyone to the kitchen."

irresponsible (adjective) /ˌɪr ɪˈspɒn sə bəl/
Meaning: It suggests a disregard for obligations, commitments, or social norms, often resulting in negative outcomes or harm to oneself or others.
Find the synonym: Which option is closest in meaning to irresponsible?
Options: careless; responsible; accountable; reliable
Answer: careless
Synonyms: careless; heedless; immature; imprudent; inconsiderate; negligent; reckless; thoughtless; unaccountable; undependable; unreliable; untrustworthy
Example: "Leaving the campfire unattended was an irresponsible act that could have led to a forest fire."

legible (adjective) /ˈlɛdʒ ə bəl/
Meaning: When a text, handwriting, or printed material is legible, the characters and words are distinct, well-formed, and easily recognizable.
Find the synonym: Which option is closest in meaning to legible?
Options: readable; illegible; unclear; unreadable
Answer: readable
Synonyms: clear; coherent; comprehensible; decipherable; distinct; explicit; lucid; plain; readable; sharp; understandable; visible
Example: "The font size of the document was adjusted to make it more legible for readers."

negligible (adjective) /ˈnɛɡlɪdʒɪb(ə)l/
Meaning: In mathematics, negligible values are often considered to be those that are close to zero or that have a very small effect on a calculation or result.
Find the synonym: Which option is closest in meaning to negligible?
Options: trivial; significant; important; substantial
Answer: trivial
Synonyms: imperceptible; inconsequential; insignificant; petty; piddling; trifling; trivial; unimportant
Example: "The damage from the storm was negligible compared to other natural disasters."

ostensible (adjective) /ɒˈstɛn sə bəl/
Meaning: It refers to a quality or characteristic that is outwardly evident or claimed, often serving as a cover or facade for something else.
Find the synonym: Which option is closest in meaning to ostensible?
Options: apparent; genuine; real; authentic
Answer: apparent
Synonyms: alleged; apparent; feigned; illusory; outward; professed; purported; putative; seeming; specious; superficial; supposed
Example: "Her ostensible joy hid the grief she felt inside; her smile didn't reach her eyes."

perceptible (adjective) /pərˈsɛp tə bəl/
Meaning: When something is perceptible, it is detectable or noticeable to a sufficient degree that it can be recognized, experienced, or understood.
Find the synonym: Which option is closest in meaning to perceptible?
Options: noticeable; imperceptible; hidden; invisible
Answer: noticeable
Synonyms: apparent; ascertainable; clear; detectable; discernible; distinguishable; evident; noticeable; observable; palpable; recognizable; visible
Example: "There was a perceptible shift in the atmosphere as the storm approached."

permissible (adjective) /pərˈmɪs ə bəl/
Meaning: When something is deemed permissible, it means that it is authorized or permitted to occur or exist without violating any established guidelines or restrictions.
Find the synonym: Which option is closest in meaning to permissible?
Options: allowable; forbidden; prohibited; banned
Answer: allowable
Synonyms: acceptable; admissible; allowable; allowed; authorized; lawful; legal; legit; permitted; sanctioned; tolerable
Example: "It is not permissible to park in a handicap spot without a permit."

plausible (adjective) /ˈplɔːzɪbl/
Meaning: It can also refer to something that is capable of being believed or accepted as true.
Find the synonym: Which option is closest in meaning to plausible?
Options: believable; implausible; unlikely; improbable
Answer: believable
Synonyms: believable; conceivable; convincing; credible; persuasive; possible; tenable; verisimilar
Example: "The theory is plausible but further research is needed to confirm it."

reprehensible (adjective) /ˌrɛprɪˈhɛnsɪbl/
Meaning: It implies that the action or behavior is morally wrong, unethical, or unacceptable.
Find the synonym: Which option is closest in meaning to reprehensible?
Options: deplorable; admirable; commendable; laudable
Answer: deplorable
Synonyms: blameworthy; censurable; condemnable; deplorable; disgraceful; heinous; immoral; inexcusable; objectionable; offensive; shameful; unacceptable
Example: "His reprehensible actions shocked everyone at the party."

risible (adjective) /ˈrɪzɪbl/
Meaning: When something is characterized as risible, it implies that it has qualities or elements that make it comical or ridiculous, whether intentionally or unintentionally.
Find the synonym: Which option is closest in meaning to risible?
Options: laughable; grave; serious; solemn
Answer: laughable
Synonyms: absurd; amusing; comic; comical; droll; facetious; farcical; funny; hilarious; humorous; laughable; ludicrous
Example: "His attempt at humor was utterly risible; nobody laughed."

submersible (adjective) /səbˈmɜr sə bəl/
Meaning: It refers to an object or device that is designed to function or operate while fully or partially submerged in water.
Find the synonym: Which option is closest in meaning to submersible?
Options: waterproof; non-waterproof; permeable; water-soluble
Answer: waterproof
Synonyms: abyssal; bathyscaphe; bottomless; dunked; engulfed; flooded; immersed; inundated; plunging; submerged; sunken; underwater
Example: "The submersible robot is equipped to map the ocean floor."

susceptible (adjective) /səˈsɛptɪbl/
Meaning: It can also refer to being vulnerable or open to a certain type of attack or influence.
Find the synonym: Which option is closest in meaning to susceptible?
Options: vulnerable; immune; resistant; impervious
Answer: vulnerable
Synonyms: accessible; amenable; disposed; exposed; gullible; impressionable; liable; malleable; open; predisposed; prone; receptive
Example: "Children are more susceptible to common colds and viruses."

tangible (noun) /ˈtandʒɪbl/
Meaning: Tangibles are physical objects or entities that have a concrete and real existence, making them capable of being touched, handled, or experienced in a physical manner.
Find the synonym: Which option is closest in meaning to tangible?
Options: palpable; intangible; immaterial; abstract
Answer: palpable
Synonyms: actual; concrete; definite; material; physical; real; solid; tactile; touchable; visible
Example: "The relief effort made a tangible difference in the affected communities."

terrible (adjective) /ˈtɛr ə bəl/
Meaning: It is a word often used to express strong negativity or a sense of extreme dissatisfaction.
Find the synonym: Which option is closest in meaning to terrible?
Options: awful; wonderful; excellent; great
Answer: awful
Synonyms: abysmal; appalling; atrocious; awful; dismal; dreadful; frightful; ghastly; horrendous; horrible; miserable; wretched
Example: "The food at that restaurant was terrible—I couldn't even finish my meal."

unintelligible (adjective) /ˌʌnɪnˈtɛlɪdʒɪbl/
Meaning: It implies a lack of clarity, coherence, or comprehensibility.
Find the synonym: Which option is closest in meaning to unintelligible?
Options: incomprehensible; clear; understandable; lucid
Answer: incomprehensible
Synonyms: baffling; confusing; cryptic; garbled; gibberish; illegible; incoherent; incomprehensible; indecipherable; indistinct; jumbled; meaningless
Example: "She found the technical terms in the report to be unintelligible."

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