なにせ

なにせ
adverb
after all; you see; the thing is
informaldescriptive
1. after all; you see; the thing is
Introduces a key explanatory fact or reason that makes the speaker's point understandable. A more casual, conversational variant of なにしろ.
なにせ初(はじ)めてだから緊張(きんちょう)するよ。
The thing is, it's my first time, so of course I'm nervous.
なにせ忙(いそが)しくて、連絡(れんらく)する暇(ひま)もなかった。
You see, I was so busy I didn't even have time to get in touch.
なにせ相手(あいて)は世界(せかい)チャンピオンだから、勝(か)てるとは思(おも)っていない。
After all, the opponent is a world champion, so I don't expect to win.

A casual conversational variant of なにしろ; both introduce a strong reason or excuse. Placed at the beginning of a sentence or clause, typically followed by から or ので.

Common patterns

  • なにせ〜から: after all, because ~
  • なにせ〜ので: since, after all, ~
  • なにせ〜んだ: the thing is ~

Similar words

  • なにしろ: same meaning, slightly more formal
  • とにかく: anyway; in any case — less explanatory, often used to redirect a topic
  • 何(なん)といっても: above all; most importantly — emphasizes the most outstanding point

Related Words

Compare: 何(なに)しろ (same meaning, slightly more formal)
Compare: とにかく (anyway)
Compare: 何(なん)といっても (above all)
general
Added 2026.6.8 16:55 · Revised 2026.9.2 13:02
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