decrease (v.)youdaoicibaDictYouDict[decrease 词源字典]
late 14c., from Anglo-French decreiss-, present participle stem of decreistre, Old French descroistre (12c., Modern French décroître), from Latin decrescere "to grow less, diminish," from de- "away from" (see de-) + crescere "to grow" (see crescent). Related: Decreased; decreasing.[decrease etymology, decrease origin, 英语词源]