obnoxious
[adjective]
Synonyms: offensive, disagreeable, insufferable, loathsome, nasty, nauseating, objectionable, odious, repulsive, revolting, unpleasant

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Antonyms: unobnoxious, grateful
Contrasted words: congenial, likable, simpatico

[TahlilGaran] English Synonym Dictionary ▲

ob‧nox‧ious /əbˈnɒkʃəs $ -ˈnɑːk-/ adjective
[Date: 1500-1600; Language: Latin; Origin: obnoxius, from noxa 'harm']
very offensive, unpleasant, or rude:
She’s really obnoxious.
an obnoxious idea
obnoxious odours
—obnoxiously adverb
—obnoxiousness noun [uncountable]

[TahlilGaran] Dictionary of Contemporary English ▲