This means 'even if' or 'whether... or...'. It shows that something is true no matter what. You use it in formal speaking or writing.
Noun + にせよPrimary
Verb [dictionary form] + にせよ
い-Adjective + にせよ
な-Adjective + にせよ
な-Adjective + である + にせよ
This means 'even if' or 'whether... or...'. It shows that something is true no matter what. You use it in formal speaking or writing.
留学するにせよ、国内の大学に進学するにせよ、どちらにしても十分な準備が必要だ。
Whether you study abroad or go to a domestic university, either way, sufficient preparation is necessary.
たとえ失敗したにせよ、その経験は決して無駄にはならない。
Even if you failed, that experience will by no means be a waste.
参加者が少ないにせよ、会議は予定通り開催します。
Even if there are few participants, the meeting will be held as scheduled.
理由が何であるにせよ、約束を破った事実は変わらない。
Whatever the reason may be, the fact that you broke your promise doesn't change.
彼の主張には、完全に同意はできないにせよ、一理あると認めざるを得ない。
Regarding his argument, even if I can't completely agree, I have to admit there is some truth to it.
This grammar is like saying, "No matter if it's A or B." You use it to show that something is true in both situations. It's like a sturdy bridge that holds up, no matter which path you take.
This is like saying 'even if'. It is more formal than 〜ても. It is very similar to 〜にしろ. It is more formal than 〜にしても. You use 〜にせよ in writing or speeches. For casual talk, you can use 〜にしたって or 〜としたって.
Don't use this when you talk to friends. For example, don't say "雨にせよ、出かける" (Even if it rains, I'll go out) to your friend. This grammar is very formal. It sounds old-fashioned. You will see it in books. You will hear it in speeches. Use it for formal writing. Use it for academic papers. Use it for official talks. Use it for debates. Do not use it in daily chat. For daily chat, use "〜にしても" or "〜にしたって" instead. They sound more natural.
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