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something or other; one thing or another; this or that
なんだかんだ言っても彼は優しい人だ。
Say what you will, he's a kind person.
なんだかんだで忙しい一日だった。
One way or another, it was a busy day.
なんだかんだあっても家族が一番大切だ。
No matter what happens, family is most important.