Meaning of “truism” in the English Dictionary

british dictionary

"truism" in American English

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truismnoun [ C ]

us /ˈtru·ɪz·əm/

a statement that is so obvious or said so often that its truth is not questioned:

It’s a truism that preventing disease is much better than curing it.

(Definition of “truism” from the Cambridge Academic Content Dictionary © Cambridge University Press)