- undesirable (adj.)
[undesirable 词源字典]
- 1660s, "not to be desired, objectionable," from un- (1) "not" + desirable. The noun meaning "undesirable person or thing" is first attested 1883. Undesired "not asked or invited" is recorded from late 15c.[undesirable etymology, undesirable origin, 英语词源]