Infallible
/ɪnˈfælɪbəl/
Meaning & Definition
adjective
Incapable of making mistakes or being wrong.
The scientist believed her methods were infallible, guaranteeing accurate results.
Certain to happen; inevitable.
With his infallible logic, he proved that the outcome was a certainty.
Etymology
From Latin 'infallibilis', meaning 'not able to fall' or 'not liable to fail'.
Common Phrases and Expressions
infallible authority
An authority that is believed to be incapable of making errors.
infallible proof
Evidence that is beyond doubt; absolutely certain.
Related Words
fallible
Capable of making mistakes or being wrong.
error
A mistake or inaccuracy.
Slang Meanings
Perfect or foolproof.
That plan is infallible; I can't see it going wrong.
Guaranteed to succeed.
He's got an infallible way to win at that game.