何かしら

なにかしら

somehow (or other); for some reason; without knowing why; something (or other)

Also written 何か知ら

Meaning

adv
somehow (or other); for some reason; without knowing why
adv
something (or other); some ... or other

Example sentences

彼女はいつも何かしら不平ばかりを言っている。

She is always complaining about something or other.
彼女はいつも何かしら不平ばかり言っている。

She is always complaining about something or other.
彼は訪ねてくるたびに、きっと何かしら忘れていく。

Whenever he calls on me, he leaves something behind.