Synonyms of undesirable

Noun

1. undesirable, unwelcome person, persona non grata

usage: one whose presence is undesirable; "rounding up vagrants and drunks and other undesirables"

Adjective

1. undesirable (vs. desirable), unwanted, unenviable, hateful, unwanted

usage: not wanted; "undesirable impurities in steel"; "legislation excluding undesirable aliens";"removed the unwanted vegetation"

2. undesirable, unsuitable, ineligible (vs. eligible)

usage: not worthy of being chosen (especially as a spouse)

Definition and meaning of undesirable (Dictionary)