To Return Something
transitive verb, godan verb
Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means return and the verb vocab version is to return or to return something. You know you're doing the action of returning someone or something because when you do, they just sue (す) you because you broke the thing you were supposed to return before returning it.
The reading is the same as what you learned with the kanji.
"I wish I hadn’t said that horrible thing to him." "Yeah, but once you say something you can’t go back to before."