intimate (adj.)youdaoicibaDictYouDict[intimate 词源字典]
1630s, "closely acquainted, very familiar," from Late Latin intimatus, past participle of intimare "make known, announce, impress," from Latin intimus "inmost" (adj.), "close friend" (n.), superlative of in "in" (see in- (2)). Used euphemistically in reference to women's underwear from 1904. Related: Intimately.[intimate etymology, intimate origin, 英语词源]
intimate (v.)youdaoicibaDictYouDict
"suggest indirectly," 1530s, back-formation from intimation, or else from Late Latin intimatus, past participle of intimare. Related: Intimated; intimating.
intimate (n.)youdaoicibaDictYouDict
1650s, "person with whom one is intimate," from intimate (adj.).