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in·fal·li·ble

infallible

 
 
pronunciation:
In fae lih bl
features:
Word Combinations (adjective), Word Parts
part of speech: adjective
definition 1: incapable of error.
The computer's calculation is considered infallible.You are wrong if you think you're infallible; you're bound to make a mistake one day that you'll seriously regret.
antonyms:
fallible
definition 2: not liable to error or failure; extremely reliable.
I will rely on your infallible judgment.This book is an infallible guide to travel in Italy.
antonyms:
fallible
similar words:
unerring
definition 3: of the pope, incapable of fallacy or error in expounding Roman Catholic doctrine on faith or morals.
Word Combinations  About this feature
adverb + (adj.)infallible almost, from, generally, nearly, neither, seemingly, supposedly, therefore, virtually
(adj.)infallible + noun act, authority, bible, bishop, chain, claim, consensus, demand, detector, dna, doctor, doctrine, drawing, ear, error, evidence, exercise, faith, guidance, guide, hint, instinct, judge, judgment, knowledge, lie, location, mean, memory, method, nose, pope, predictor, rule, science, sense, sign, signal, smell, source, statement, teaching, test, truth, will, word, writer [See all][See only the most frequent]
derivations: infallibly (adv.), infallibility (n.)
Word Parts  About this feature
The word infallible contains the following parts:
in-2 Latin prefix that means not, without
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The prefix in-2 occurs in Latin loanwords and attaches to Latinate bases. The bases of most words prefixed with in-2 are independent adjectives (inadvertent , incognizant ), although the base adjective may no longer be in widespread use (as with incessant ). Exceptions include iniquitous and indignant . -in2 has multiple forms, as the 'n' sound in in-2 assimilates to the initial sound of the base to which it is attached. See the assimilated forms ig-, il-2, im-2, and ir-2.
fall, fals Latin root that means to deceive
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-able, -ible, -ble Latin adjective-forming suffix that means capable of being, doing, or undergoing
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The suffix -able , and its variants, is attached to Latin verb roots or English transitive verbs to form adjectives. (In a small set of cases, -able is attached to a noun, e.g. knowledgeable and marriageable.) For spelling purposes, it is useful to know that -able is more likely to be added to a whole English word (comparable , adorable ), while -ible is more likely to follow a bound root (visible , legible ). However,there are still many words which combine a root with -able (capable , inevitable ). The suffix -ity can be added to any adjective ending in -able , -ible , -ble to produce a corresponding noun ending in -ability, -ibility, -bility (possible + -ity > possibility; irrevocable + -ity > irrevocability.)
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acceptable, accessible, admissible, adorable, amiable, amicable, audible, avoidable, believable, bearable, biodegradable, capable, calculable, cognizable, comparable, compatible, comprehensible, conformable, conversable, convertible, corrigible, credible, creditable, curable, dependable, despicable, disagreeable, disposable, divisible, eligible, explicable, flammable, flexible, illegible, illimitable, imaginable, immiscible, immovable, immutable, impalpable, impassable, impeccable, impermeable, impermissible, imperturbable, implacable, implausible, imponderable, impossible, impregnable, inalienable, inaudible, incapable, incalculable, incommunicable, incomprehensible, inconceivable, detectable, conceivable, incorrigible, incredible, incurable, indefeasible, indelible, indescribable, indestructible, indivisible, indomitable, ineligible, ineluctable, ineradicable, inescapable, inevitable, inexorable, inexpiable, inexplicable, infallible, inhospitable, inimitable, inscrutable, inseparable, insuperable, intangible, interminable, intractable, invaluable, invariable, invincible, invisible, irrefragable, irrefutable, irremissible, irreparable, irreversible, irrevocable, legible, likable, lovable, manageable, measurable, movable, navigable, notable, opposable, palpable, perishable, permissible, placable, portable, possible, potable, predictable, preferable, prescriptible, recognizable, remissible, reprehensible, reversible, risible, semipermeable, sensible, superable, susceptible, tangible, tenable, tolerable, tractable, transmissible, unsupportable, usable, viable, visible, washable, affordable, allowable, reliable, remarkable, approachable, disputable, drinkable, durable, eatable, renewable, sustainable, unshakable