何なんにせよMeanings1expressionanyway; in any case; at any rateUsed to introduce a conclusion or statement that holds regardless of circumstances. Similar to 何しろ, but 何にせよ is slightly more formal and often appears in written or structured speech.See also: 何しろ (なにしろ)何なんにせよ、まずはやってみよう。Anyway, let's give it a try first.何なんにせよ、彼かれが来くるのは確たしかだ。