Synonyms of unacceptable in English:


See US English definition of unacceptable

See UK English definition of unacceptable

See Spanish definition of inaceptable


1‘four boys have been suspended for unacceptable behaviour’

intolerable, insufferable, unsatisfactory, impermissible, inadmissible, inappropriate, unsuitable, undesirable, unreasonable, objectionable, insupportable
offensive, obnoxious, disagreeable, disgraceful, deplorable, terrible, distasteful, displeasing, improper, unseemly, beyond the pale, bad, poor
informal not on, a bit much, out of order, out, not quite the done thing, too much
British informal a bit thick, a bit off, off, not cricket
Australian, New Zealand informal over the fence
rare exceptionable, condemnable

acceptable, satisfactory