How to say "okay" in Japanese

• 大丈夫だいじょうぶJLPT N5approx.Common
  na-adjectiveCovers 'okay' meaning 'fine, no problem': reassuring someone ('It's okay') or confirming safety ('Are you okay?'). It says a situation is problem-free rather than expressing agreement.
  彼女かのじょは今いまのところ大丈夫だいじょうぶです。↗

  She is all right at the moment.
• よしCommon
  interjectionAn exclamation of resolve or satisfaction — 'Okay, let's go!' or 'All right, we did it.' Said to spur yourself on, never as an answer to a question.
  「キャッチボールしようか」「よし、是非ぜひやろう」↗

  "How about playing catch?" "Sure, why not?"
• ＯＫオッケーJLPT N1approx.Common
  interjection, noun, suru verb, transitive verb, intransitive verbThe borrowed word itself, for casual approval, permission or confirmation: 'that's okay', 'sounds good', a go-ahead. The closest one-to-one match to English 'okay'.
  フルコースもあれば、サラダで軽かるいお食事しょくじもオーケー。↗

  You can eat a complete meal, or just go easy with our salad bar.
• さあJLPT N5approx.Common
  interjectionAn interjection used to urge or usher action: 'Okay, let's begin', 'All right, now...'. It opens an activity or calls attention; it is not a way to agree or grant permission.
• はいJLPT N5approx.Common
  interjectionThe basic affirmative reply: 'okay' as acknowledgment or agreement when taking instructions or accepting a request. It says 'understood, will do' rather than that something is fine.

For 'it's fine/no problem' use 大丈夫; for agreeing or giving a go-ahead use ＯＫ or 「はい」; 「よし」 is a self-directed exclamation of resolve, and 「さあ」 urges people to begin.

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

• 大丈夫だいじょうぶsafe
• よしalright
• ＯＫオッケーOK
• はいよokay
• よしきたall right
• ほいきたall right
• おけまるOK
• さあall right
• はいunderstood
• 平気へいきall right
• 応おうaye