Vocabulary What does なんとなく (nantonaku) mean? なんとなく means somehow, for some reason. Quick factsReadingなんとなくRomajinantonakuLevel (estimated, JLPT framework)N2 なんとなくなんとなくN2 · estimated, JLPT frameworknantonakusomehow, for some reasonExample sentencesなんとなくこの店(みせ)が好(す)きだ。I like this shop, for some reason.なんとなく嫌(いや)な予感(よかん)がする。I somehow have a bad feeling.