accessible, audible, compatible, comprehensible, credible, crucible, digestible, eligible, fallible, feasible, flexible, foible, fungible, gullible, horrible, illegible, implausible, inaudible, incontrovertible, incorrigible, indelible, indestructible, inedible, infallible, inflexible, intangible, invincible, irascible, irreducible, irresistible, irresponsible, legible, negligible, ostensible, perceptible, permissible, plausible, reprehensible, risible, submersible, susceptible, tangible, terrible, unintelligible