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infallible

play
adjective in·fal·li·ble \(ˌ)in-ˈfa-lə-bəl\

Simple Definition of infallible

  • : not capable of being wrong or making mistakes : not fallible

  • : certain to work properly or succeed

Full Definition of infallible

  1. 1 :  incapable of error :  unerring <an infallible memory>

  2. 2 :  not liable to mislead, deceive, or disappoint :  certain <an infallible remedy>

  3. 3 :  incapable of error in defining doctrines touching faith or morals

in·fal·li·bil·i·ty play \-ˌfa-lə-ˈbi-lə-tē\ noun
in·fal·li·bly play \-ˈfa-lə-blē\ adverb

Examples of infallible

  1. I never claimed to be infallible.

  2. There is no infallible remedy to these problems.



Origin of infallible

Middle English, from Medieval Latin infallibilis, from Latin in- + Late Latin fallibilis fallible


First Known Use: 15th century



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