infallible
adjective/ɪnˈfæləbl/
/ɪnˈfæləbl/
- never wrong; never making mistakes
- infallible advice
- Doctors are not infallible.
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- that never fails; always doing what it is supposed to do
- an infallible method of memorizing things
Word Originlate 15th cent.: from French infaillible or late Latin infallibilis, from in- ‘not’ + Latin fallere ‘deceive’.
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infallible