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English definition of “unacceptable”

unacceptable

adjective     /ˌʌn.əkˈsep.tə.bl̩/ US  /-t̬ə-/
B2 too bad to be accepted, approved of, or allowed to continue: The unions have described the latest pay offer as unacceptable. The taking of hostages, said the minister, was totally unacceptable under any circumstances. The report found what it described as 'unacceptable levels of air pollution' in several major cities.Not good enoughUnsuitable and unacceptable
(Definition of unacceptable adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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