'Unpleasant' definitions:

Definition of 'unpleasant'

From: WordNet
adjective
Disagreeable to the senses, to the mind, or feelings ; "an unpleasant personality"; "unpleasant repercussions"; "unpleasant odors" [ant: pleasant]

Definition of 'Unpleasant'

From: GCIDE
  • Unpleasant \Un*pleas"ant\, a. Not pleasant; not amiable or agreeable; displeasing; offensive. -- {Un*pleas"ant*ly}, adv. -- {Un*pleas"ant*ness}, n. [1913 Webster]