noun
everyday occurrence; commonplace; nothing out of the ordinary
A yojijukugo meaning something so ordinary it is unremarkable. Often used in the phrase 家常茶飯事 (かじょうさはんじ) to emphasize a trivial daily event.
彼にとって徹夜は家常茶飯だ。
For him, staying up all night is an everyday occurrence.
この程度のトラブルは家常茶飯事に過ぎない。
This level of trouble is nothing more than a commonplace event.