動詞 demote:

1. assign to a lower position; reduce in rank
   同義詞：bump, relegate, break, kick downstairs

1. He was demoted from sergeant to corporal.
   他由中士降到下士。

de.mote

v.tr.（及物動詞）
de.mot.ed,de.mot.ing,de.motes
To reduce in grade, rank, or status.
降級：降低等級、級別或地位

來源：
de-
de-
(pro)mote
(pro)mote

【引伸】
demo.tion
n.（名詞）
<參考詞匯><同義詞>demote,break,bust,degrade,downgrade,reduceThe central meaning shared by these verbs is .to lower in grade, rank, or status.:
這些動詞共有的一個中心意義是.降低等級、級別或地位.：
例句：
was demoted from captain to lieutenant;
統(tǒng)領(lǐng)降為副手；

例句：
a noncommissioned officer broken to the ranks;
一個被降級銜但還未受任命的軍官；

例句：
a detective who was busted to uniformed traffic patrol for insubordination;
因不服從命令而被降級到穿統(tǒng)一制服的交通巡邏隊的偵探；

例句：
a supervisor degraded to an assistant;
被降為侍者的管理人員；

例句：
a popular author downgraded by critical opinion to a genre writer;
因批評性言論被降為專題作者的知名作家；

例句：
a captain who was reduced from command of a battleship to administrative duty ashore. promote
從戰(zhàn)艦的指揮官降到行政職務(wù)的船長 promote