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Definition of infallible adjective from the Oxford Advanced Learner's Dictionary

infallible

adjective
 
/ɪnˈfæləbl/
 
/ɪnˈfæləbl/
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  1. never wrong; never making mistakes
    • infallible advice
    • Doctors are not infallible.
    opposite fallible
  2. that never fails; always doing what it is supposed to do
    • an infallible method of memorizing things
    Topics Successc2
    3. Word Originlate 15th cent.: from French infaillible or late Latin infallibilis, from in- ‘not’ + Latin fallere ‘deceive’.
See infallible in the Oxford Advanced American Dictionary
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trait
noun
 
 
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