impatient (adj.)youdaoicibaDictYouDict[impatient 词源字典]
late 14c., from Old French impacient (Modern French impatient), from Latin impatientem (nominative impatiens) "that cannot bear, intolerant, impatient," from assimilated form of in- "not, opposite of" (see in- (1)) + patiens (see patience). Related: Impatiently.[impatient etymology, impatient origin, 英语词源]