expression, noun-modifying (irregular)
ordinary; nothing special; unremarkable
Used prenominally to describe something as common, everyday, or not worth making a fuss about. Often implies a lack of excitement or special quality.
それは何てことのない日常の一場面だった。
It was just an ordinary everyday scene.
彼は何てことのない顔で嘘をついた。
He told a lie with a perfectly straight face.