Longman Dictionary of Contemporary English homepage

infallible

 adjective
     
in‧fal‧li‧ble
1 always right and never making mistakes [≠ fallible]:
No expert is infallible.
an infallible memory
2 something that is infallible always works or has the intended effect:
He had an infallible cure for a hangover.
—infallibly adverb
—infallibility noun [uncountable]
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary

Browse the dictionary