Synonyms of undesirable in English:

undesirable


See definition of undesirable

adjective

1‘a mix of medicines may result in undesirable side effects’

SYNONYMS

unpleasant, disagreeable, nasty, unacceptable, unwelcome, unwanted, unwished-for, unenviable, unappealing

unfortunate, infelicitous

ANTONYMS

desirable, pleasant, preferable

2‘William had been involved with some very undesirable people’

SYNONYMS

unpleasant, disagreeable, distasteful, displeasing, unacceptable, off-putting, obnoxious

nasty, disgusting, awful, terrible, dreadful, frightful, repulsive, repellent, repugnant, revolting, abhorrent, loathsome, hateful, detestable, reprehensible, deplorable, appalling, insufferable, intolerable, despicable, contemptible, beyond the pale, odious, vile, obscene, foul, unsavoury, unpalatable, sickening, nauseating, nauseous, noxious

informal ghastly, horrible, horrid

British informal beastly

archaic disgustful, loathly

rare exceptionable, rebarbative

ANTONYMS

pleasant, agreeable, acceptable