decrease
v.
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.
n.
late 14c., "detriment, harm;" early 15c. as "a becoming less or smaller," from Anglo-French decres; see decrease, v..
〔李〕[de-=down 下；creas=to grow 变得；-e⇒“to grow downward 变得下降了”→] v. grow or become less 减少；减小
〔李〕[de-=downward向下；creas=to grow生成，变化；-e→“to grow downward 向下变化”→] I v. become less, or make less减少；使变少