uneasy (adj.)youdaoicibaDictYouDict[uneasy 词源字典]
late 13c., "not comforting, causing trouble," from un- (1) "not" + easy (adj.). Meaning "disturbed in mind" is attested from 1670s. Related: Uneasily; uneasiness.[uneasy etymology, uneasy origin, 英语词源]