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 →Frequently asked questions
What does “infallible” mean?
The word “infallible” means never wrong; incapable of making a mistake. In plain terms, something (or someone) that never gets it wrong.
How do you pronounce “infallible”?
“Infallible” is pronounced ihn-FA-lih-buhl (/ɪnˈfælɪbəl/ in IPA).
How do you use “infallible” in a sentence?
Here is “infallible” used in a sentence: “No system is truly infallible, however well it's tested.”
What is another word for “infallible”?
Words with a similar meaning to “infallible” include faultless, perfect, indefective and inerrant.
What is the opposite of “infallible”?
The opposite of “infallible” — its antonyms — are fallible, defective, faultful, faulty and imperfect.
What part of speech is “infallible”?
“Infallible” is an adjective.
Where does the word “infallible” come from?
The word “infallible” comes from Medieval Latin. From Medieval Latin infallibilis, from Latin in- ("not") + fallibilis ("liable to fail").
How many meanings does “infallible” have?
“Infallible” has 2 distinct senses listed in this dictionary. The most common is: never wrong; incapable of making a mistake.