Unacceptable(adjective)
So bad that you think it should not be allowed.
Hindi meaning:मनोबल
Synonyms: Objectionable, Undesirable, Unwelcome, Intolerable
Antonyms: Acceptable, Satisfactory, Appropriate, Tolerable
Example: Such behaviour is totally unacceptable in a civilized society.
Trick to remember: That what is not acceptable is unacceptable. 
