unacceptable
adjective
1. not adequate to give satisfaction
- the coach told his players that defeat was unacceptable
Similar word(s): unsatisfactory
2. not acceptable; not welcome
- a word unacceptable in polite society
- an unacceptable violation of personal freedom
Similar word(s): exceptionable, objectionable, unsatisfactory, unwelcome
3. (used of persons or their behavior) not acceptable or reasonable
Similar word(s): intolerable, unbearable, unendurable, impossible
4. not conforming to standard usage
- the following use of `access' was judged unacceptable by a panel of linguists; `You can access your cash at any of 300 automatic tellers'
Similar word(s): nonstandard, unaccepted