Infallible — Meaning, Definition & Synonyms

adjective /(ˌ)in-ˈfa-lə-bəl/ in·fal·li·ble

Meaning & Definition of Infallible

Infallible (adjective)

  1. incapable of error, unerring
  2. not liable to mislead, deceive, or disappoint, certain
  3. incapable of error in defining doctrines touching faith or morals

Infallible (adjective) — Senses, Synonyms & Antonyms

  1. not being or likely to be wrong

    "a teacher with an infallible memory for names"

    similar: unerring, unfailing
    related: errorless, faultless, flawless, impeccable, certain, foolproof, inerrant, perfect, sure, dependable, reliable
    opposite: fallible
    near: defective, faulty, flawed, imperfect, undependable, unreliable

  2. not likely to fail

    "an infallible cure for hiccups"

    similar: can't-miss, certain, fail-safe, sure, surefire, unfailing
    related: dependable, reliable, deadly, unerring
    opposite: fallible
    near: doubtful, questionable, uncertain

Synonyms, Thesaurus & Another Word for Infallible

The most common words with a similar meaning to Infallible:

unerring, unfailing, can't-miss, certain, fail-safe, sure, surefire

Antonyms & Opposite Words for Infallible

Words with the opposite meaning of Infallible:

fallible

Related Words for Infallible

errorless, faultless, flawless, impeccable, foolproof, inerrant, perfect, dependable, reliable, deadly

Near Antonyms of Infallible

defective, faulty, flawed, imperfect, undependable, unreliable, doubtful, questionable, uncertain

Word Forms of Infallible

Derived words: infallibility (noun), infallibly (adverb)

Origin & Etymology of Infallible

Middle English, from Medieval Latin infallibilis, from Latin in- + Late Latin fallibilis fallible

First known use: 15th century

Frequently Asked Questions about Infallible

What does "Infallible" mean?

"Infallible" means incapable of error, unerring. As an adjective, it is defined as: incapable of error, unerring. It has 2 distinct senses.

What is another word for "Infallible"?

Other words for "Infallible" include unerring, unfailing, can't-miss, certain, fail-safe, sure and surefire. The best synonym depends on which meaning of "Infallible" you intend.

What are different ways to say "Infallible"?

There are 17 words and phrases with a similar meaning to "Infallible". Common alternatives include unerring, unfailing, can't-miss, certain, fail-safe, sure and surefire.

What is the opposite of "Infallible"?

Antonyms of "Infallible" include fallible. Near antonyms include defective, faulty, flawed and imperfect.

How do you use "Infallible" in a sentence?

Examples of "Infallible" in a sentence: "a teacher with an infallible memory for names"; "an infallible cure for hiccups".

Is "Infallible" a noun, verb, or adjective?

"Infallible" is an adjective.

How do you pronounce "Infallible"?

"Infallible" is pronounced /(ˌ)in-ˈfa-lə-bəl/ and divided into syllables as in·fal·li·ble.

What is the origin of the word "Infallible"?

"Infallible" comes from Middle English, from Medieval Latin infallibilis, from Latin in- + Late Latin fallibilis fallible. First known use: 15th century.