undress (v.)youdaoicibaDictYouDict[undress 词源字典]
1590s, "to shed one's clothing," from un- (2) "opposite of" + dress (v.). Transitive sense of "to strip off (someone's) clothing" is recorded from 1610s. Related: Undressed; undressing.[undress etymology, undress origin, 英语词源]
undress (n.)youdaoicibaDictYouDict
"state of partial or incomplete dress," 1680s, from undress (v.). Meaning "ordinary dress" is from 1748.