Expressions (phrases, clauses, etc.), Adverb taking the 'to' particle, Adverb (fukushi)
this and that; one thing or another; something or other; various things
Usually written using kana alone
祖父はいつも何やかやぶつぶつ不平を言っていた。My grandfather was always grumbling about something or other.
Also written 何や彼や【なんやかや】