Meaning of “naught” in the English Dictionary

"naught" in British English

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uk /nɔːt/ us /nɑːt/

naught number (ZERO)

[ C ] US old-fashioned also mainly UK nought the number 0 or zero:

Add two naughts and divide by two.

(Definition of “naught” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"naught" in American English

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naughtnoun [ U ]

us /nɔt, nɑt/

old use nothing:

All our effort was for naught.

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