godan verb (-ru), intransitive verb
look smug; make a self-satisfied face
Slang verb derived from どや顔 (smug face). Describes the act of putting on a smug or triumphant expression, often after a small victory or when showing off.
See also: どや顔 (どやがお)
テストで満点を取って、彼はドヤってた。
He got a perfect score on the test and was looking smug.
自慢の新作料理を出したら、シェフがドヤった。
When he served his proud new dish, the chef looked self-satisfied.