infallible
4 synonyms and 6 antonyms for infallible, grouped by meaning and by how common each one is.
Adjective — Never wrong; incapable of making a mistake.
Synonyms
Everyday swaps
Common words most readers know — safe in any writing.
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
Antonyms
How to use infallible
The word patterns that sound natural to a native speaker.
Etymology
From Medieval Latin infallibilis, from Latin in- ("not") + fallibilis ("liable to fail").
Full origin of infallible →