downgrade的词源

英文词源

downgrade (v.)

1930, from down (adv.) + grade (v.). Related: Downgraded; downgrading. As a noun, "a downward slope," from 1858.

中文词源

downgrade：贬低，降低

词根词缀： down向下 + -grad-步,级 + -e

该词的英语词源请访问趣词词源英文版：downgrade 词源，downgrade 含义。