How to say "whoever" in Japanese

• 何人なにびとCommon
  pronounCovers 'whoever' as a weighty 'any person at all', with the tone of solemn written statements such as laws and pledges. Seldom the word you want for ordinary 'whoever'; for that, 誰でも is the natural choice.
  何なんびとも奴隷どれいの状態じょうたいに留め置とめおかれてはならない。↗

  No one shall be held in slavery.
• 誰でもだれでもCommon
  expression, pronounThe broad, neutral choice: 'anyone; anybody', and 'everyone' when the sense is 'each and every person'. Use it for 'whoever' that simply means 'any person at all', with no restriction on who.
  サムは彼かれの援助えんじょを求もとめる人ひとなら誰だれでも援助えんじょする。↗

  Sam helps whoever asks him to.
• 誰にでもだれにでもCommon
  expression, conjunctionLiterally だれ 'who' plus に 'to': use it where 'whoever' is really 'to whoever/anyone', the person receiving an action or feeling; it often amounts to 'everyone'. For a subject 'whoever', 誰でも is the fit.
  １度いちどや２度どの失敗しっぱいはだれにでもある。↗

  Everybody fails once or twice.

Choose 「誰でも」 for plain 'anyone/whoever' with no restriction, 「誰にでも」 when 'whoever' is really 'to whoever/anyone' as a recipient, and 何人 for a weighty 'any person' in solemn written statements.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 何人なにびとanyone
• 誰でもだれでもanyone
• 誰にでもだれにでもanyone
• 誰であれだれであれwhoever
• だれなりとanyone
• 誰にだってだれにだってanyone
• 誰だってだれだってanyone