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English definition of “unacceptable”

unacceptable

adjective
 
 
/ˌʌnəkˈseptəbl/
B2 too bad to be allowed to continue: The water contains unacceptable levels of pollution. I find that sort of behaviour completely unacceptable.Not good enough
unacceptably adverb
(Definition of unacceptable from the Cambridge Learners Dictionary © Cambridge University Press)
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