降級 こうきゅう Meanings Noun, する verb, Transitive, Intransitive downgrading; demotion; degradation; lowering of position (or rank, etc.) Antonym: 昇級 (しょうきゅう). Kanji 降 descend. Read as コウ. 級 grade. Read as キュウ. Jinuma: Japanese Dictionary · Word lists