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unacceptable

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adjective unacceptable pronunciation in American English /ˌʌnəkˈseptəb(ə)l/
  1. wrong or harmful, especially by not reaching usual or accepted standards of behavior, morals, etc.

    unacceptable levels of pollution

    This sort of behavior is totally unacceptable in a civilized society.

    find something unacceptable (=think it is wrong):

    Many viewers find the amount of violence on TV unacceptable.

    unacceptable to:

    Bush's proposals were unacceptable to most environmentalists.

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unacceptably

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