atheism (noun) /ˈeɪθɪɪz(ə)m/
Definition: The philosophical position that asserts the absence of belief in the existence of deities, gods, or a divine being.
Example Sentence: "Despite his atheism, he attended religious ceremonies out of respect for tradition."
Synonyms: agnosticism; disbelief; freethinking; freethought; godlessness; humanism
Opposite Meaning: theism

autarky (noun) /ˈɔ tɑr ki/
Definition: A state of economic self-sufficiency, in which a country or region produces all the goods and services it needs without relying on outside trade.
Example Sentence: "The village's autarky allowed it to maintain its traditional way of life without outside influence."
Synonyms: closed; contained; containedness; independence; independent; isolated
Opposite Meaning: dependence

doctrine (noun) /ˈdɒktrɪn/
Definition: A set of beliefs, principles, or teachings, often regarding a particular subject or issue.
Example Sentence: "The court upholds the doctrine of innocent until proven guilty."
Synonyms: belief; concept; conviction; creed; dogma; ideology
Opposite Meaning: disbelief

egalitarian (adjective) /ɪˌɡalɪˈtɛːrɪən/
Definition: Belief in the equality of all people, particularly in terms of social, political, and economic rights and opportunities.
Example Sentence: "The country's egalitarian constitution guarantees equal rights for all citizens."
Synonyms: democratic; equable; equal; fair; impartial; just
Opposite Meaning: elitist

extremist (noun) /ɪkˈstriːmɪst/
Definition: A person who holds extreme political, religious, or social views, and is willing to take drastic or violent action to promote these views.
Example Sentence: "The extremist's message was rejected by the peaceful majority."
Synonyms: activist; bigot; devotee; enthusiast; fanatic; militant
Opposite Meaning: moderate

fascism (noun) /ˈfæˌʃɪzəm/
Definition: A political ideology characterized by authoritarianism, extreme nationalism, and the suppression of opposition.
Example Sentence: "The rise of fascism in Europe led to World War II."
Synonyms: absolutism; authoritarianism; autocracy; communism; despotism; dictatorship
Opposite Meaning: democracy

feminist (noun) /ˈfɛmɪnɪst/
Definition: An advocate of women's rights on the basis of the equality of the sexes
Example Sentence: "The feminist literature course explores the works of women writers throughout history."
Synonyms: activist; advocate; crusader; egalitarian; empowerment; equalist
Opposite Meaning: misogynist

fundamentalist (noun) /ˌfʌndəˈmɛntəlɪst/
Definition: A person who adheres to a strict, literal interpretation of a particular ideology or religious doctrine.
Example Sentence: "The government cracked down on fundamentalist groups that were inciting violence."
Synonyms: dogmatist; extremist; hardliner; ideologue; puritan; radical
Opposite Meaning: liberal

heresy (noun) /ˈhɛrɪsi/
Definition: A belief or doctrine that goes against the accepted norms of a particular group or community.
Example Sentence: "The historian's reinterpretation of events was deemed heresy by traditional scholars."
Synonyms: apostasy; blasphemy; deviation; dissent; dissidence; heterodoxy
Opposite Meaning: orthodoxy

heterodox (adjective) /ˌhɛtərəˌdɑks/
Definition: Deviating from the accepted or orthodox views of a particular group or society.
Example Sentence: "The philosopher's heterodox ideas challenged long-held beliefs in the field."
Synonyms: dissentient; dissenting; divergent; heretical; iconoclastic; maverick
Opposite Meaning: conventional

ideologue (noun) /ˈʌɪdɪəlɒɡ/
Definition: A person who is strongly committed to a particular ideology or set of beliefs.
Example Sentence: "He was an ideologue who believed that the end justifies the means."
Synonyms: activist; advocate; crusader; devotee; disciple; fanatic
Opposite Meaning: pragmatist

indoctrination (noun) /ɪnˌdɒk trəˈneɪ ʃən/
Definition: The process of imparting beliefs, ideas, or values to individuals, often in a systematic and persuasive manner, with the intention of shaping their thoughts and behaviors in accordance with a specific ideology or doctrine.
Example Sentence: "The cult used intense indoctrination tactics to isolate and manipulate its members."
Synonyms: brainwashing; conditioning; grooming; implantation; influence; instruction
Opposite Meaning: enlightenment

jingoism (noun) /ˈdʒɪŋɡəʊɪz(ə)m/
Definition: A strong and aggressive nationalism or patriotism that often includes aggressive foreign policy, particularly in the form of military intervention.
Example Sentence: "The media's coverage of international affairs was criticized for promoting jingoism."
Synonyms: aggressiveness; bellicosity; belligerence; bigotry; chauvinism; hawkishness
Opposite Meaning: internationalism

missionary (noun) /ˈmɪʃənəri/
Definition: A person who is dedicated to promoting and spreading a particular religion or belief system.
Example Sentence: "The missionary traveled to a remote village to spread the word of God."
Synonyms: apostle; clergyman; converter; ecclesiastic; evangelist; messenger
Opposite Meaning: nonbeliever

nihilism (noun) /ˈnʌɪ(h)ɪlɪz(ə)m/
Definition: A philosophical belief that life is without objective meaning, purpose, or intrinsic value.
Example Sentence: "The play deals with the concept of moral nihilism, where all moral principles are rejected."
Synonyms: abnegation; atheism; cynicism; pessimism; rejection; renunciation
Opposite Meaning: existentialism

orthodox (adjective) /ˈɔːθədɒks/
Definition: Following or conforming to traditional beliefs or established customs and practices.
Example Sentence: "She comes from an orthodox family that strictly follows cultural customs."
Synonyms: accepted; classic; common; conventional; mainstream; normal
Opposite Meaning: unconventional

pacifist (noun) /ˈpasɪfɪst/
Definition: A person who is strongly opposed to war and violence, and advocates for peaceful resolution of conflicts.
Example Sentence: "The pacifist refused to take up arms and fight in the war."
Synonyms: antimilitarist; antiwar; conchie; dove; neutral; nonaggressor
Opposite Meaning: militarist

pluralism (noun) /ˈplʊərəlɪz(ə)m/
Definition: The coexistence of multiple, diverse beliefs, values, and lifestyles within a society or group.
Example Sentence: "The festival is a celebration of cultural pluralism."
Synonyms: assortment; coexistence; conflation; divergence; diversity; fusion
Opposite Meaning: uniformity

postmodernism (noun) /poʊstˈmɒd ərˌnɪz əm/
Definition: A philosophical and cultural movement that challenges the dominant notions of objective truth, grand narratives, and fixed meanings.
Example Sentence: "The postmodern movement embraces subjectivity and multiple perspectives."
Synonyms: deconstruction; discursiveness; fragmentation; heterogeneity; intertextuality; irony
Opposite Meaning: traditionalism

progressive (adjective) /prəˈɡrɛsɪv/
Definition: Embracing change, advancement, and improvement, particularly in social, political, or cultural spheres.
Example Sentence: "The company has a progressive approach to employee benefits and work-life balance."
Synonyms: dynamic; enlightened; enterprising; liberal; modern; radical
Opposite Meaning: conservative

quixotic (adjective) /kwɪkˈsɒtɪk/
Definition: Exceedingly idealistic, impractical, or visionary, often to the point of being unrealistic or far-fetched.
Example Sentence: "The young idealist had a quixotic belief in the power of love to conquer all."
Synonyms: chimerical; dreamy; fanciful; fantastical; foolish; imaginary
Opposite Meaning: pragmatic

radical (adjective) /ˈradɪkl/
Definition: Characterized by a departure from established norms, traditions, or conventional beliefs, often in a fundamental or extreme way.
Example Sentence: "The artist's work was considered radical, pushing the boundaries of traditional art."
Synonyms: draconian; drastic; excessive; extreme; fanatical; profound
Opposite Meaning: conservative

stigma (noun) /ˈstɪɡmə/
Definition: A mark of shame, disgrace, or disapproval that is associated with a particular person or group.
Example Sentence: "The stigma around addiction can make it difficult for those struggling to ask for help."
Synonyms: blot; brand; dishonor; disrepute; guilt; imputation
Opposite Meaning: honor

unscrupulous (adjective) /ʌnˈskruːpjʊləs/
Definition: Lacking in moral principles and not adhering to ethical standards.
Example Sentence: "The unscrupulous salesman used high-pressure tactics to make a sale."
Synonyms: amoral; corrupt; crooked; deceitful; devious; dishonest
Opposite Meaning: ethical

utilitarian (adjective) /ˌjuːtɪlɪˈteəriən/
Definition: Designed to be practical, functional, and useful, rather than decorative or ornamental.
Example Sentence: "The utilitarian approach to fashion prioritizes comfort and functionality over style."
Synonyms: austere; effective; efficient; frugal; plain; pragmatic
Opposite Meaning: decorative

utopia (noun) /juːˈtəʊpɪə/
Definition: An imagined place or state of things in which everything is perfect.
Example Sentence: "Many people believe that a utopia is impossible due to human nature."
Synonyms: bliss; dreamland; Eden; Elysium; heaven; ideal
Opposite Meaning: dystopia

vice (noun) /vʌɪs/
Definition: A bad habit or behavior that is considered immoral or socially unacceptable.
Example Sentence: "Technology addiction is a modern-day vice that affects many people."
Synonyms: debauchery; deficiency; failing; fault; flaw; foible
Opposite Meaning: virtue

virtue (noun) /ˈvəːtʃuː/
Definition: A moral quality or characteristic that is considered to be good, righteous, or admirable.
Example Sentence: "She worked in the orphanage for years and was the embodiment of virtue and dignity."
Synonyms: character; decency; dignity; ethics; honesty; honor
Opposite Meaning: vice