say it: uhn-ak-SEP-tuh-buhl
unacceptable is an adjective meaning "not adequate to give satisfaction". It carries 4 recorded senses.
not adequate to give satisfaction
“the coach told his players that defeat was unacceptable”
not acceptable; not welcome
“a word unacceptable in polite society”
“an unacceptable violation of personal freedom”
(used of persons or their behavior) not acceptable or reasonable
“impossible behavior”
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'”
linguistics
Definitions, synonyms and semantic relations for unacceptable come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.