adjective
C2
Proficient
infallible
ihn-FA-lih-buhl
Infallible (adjective) means Never wrong; incapable of making a mistake. Example: “No system is truly infallible, however well it's tested.”
adjective
1
Never wrong; incapable of making a mistake.
"No system is truly infallible, however well it's tested."
"She used to think her mother's judgement was infallible."
2
Certain to work every time.
"He swore by an infallible method for winning at cards."
How to use infallible
Learner’s notesIn plain EnglishSomething (or someone) that never gets it wrong.
Easily confused with
Common pairings
infallible judgement
far from infallible
infallible method
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Word forms
- Plural
- infallibles
- Comparative
- more infallible
- Superlative
- most infallible
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No system is truly _____, however well it's tested.
Etymology
From Medieval Latin infallibilis, from Latin in- ("not") + fallibilis ("liable to fail").
Synonyms
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Related words
Rhymes for infallible
See all rhymes for 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.
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