Word.ws English Dictionary

Synonyms of infallible

4 similar words · 6 opposite words

Another word for infallible is faultless. Other synonyms of infallible are perfect. The opposite of infallible is error-prone.

Synonyms and similar words for infallible

adjectiveMore synonyms

Opposite of infallible

adjectiveMore antonyms

Meaning of infallible

  1. noun A person who, or an object or process that, is taken as being infallible.
  2. adjective Without fault or weakness; incapable of error or fallacy.
  3. adjective Certain to produce the intended effect; sure.

Full definition of infallible

infallible in other languages

Questions about synonyms of infallible

What is another word for infallible?
Infallible has 4 synonyms on Word.ws, such as faultless and perfect.
What is the opposite of infallible?
The opposite of infallible is error-prone. Other antonyms of infallible are imperfect.
What does infallible mean?
Infallible means a person who, or an object or process that, is taken as being infallible.

Source and license

Adapted from Wiktionary: infallible (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.

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