ＯＫ

also: オーケー · おっけー · おーけー

Common wordJLPTN1Freq.FrequencyTop 1,000

ＯＫする · noun or participle which takes 'suru'

Form	Positive	Negative
Dictionary	ＯＫする	ＯＫしない
Polite	ＯＫします	ＯＫしません
Past polite	ＯＫしました	ＯＫしませんでした
Past	ＯＫした	ＯＫしなかった
Te-form	ＯＫして	ＯＫしないで
Desire	ＯＫしたい	ＯＫしたくない
Potential	ＯＫできる	ＯＫできない
Passive	ＯＫされる	ＯＫされない
Causative	ＯＫさせる	ＯＫさせない
Causative passive	ＯＫさせられる	ＯＫさせられない
Volitional	ＯＫしよう
Polite volitional	ＯＫしましょう
Imperative	ＯＫしろ	ＯＫするな
Conditional	ＯＫすれば	ＯＫしなければ
Tara conditional	ＯＫしたら	ＯＫしなかったら

Meanings

interjection, noun, noun or participle which takes 'suru', transitive verb, intransitive verb

OK; okay; all right

Used as an interjection or noun/する-verb to express agreement, permission, or that something is acceptable. Very common in casual conversation.

それでＯＫ？
Is that OK?
上じょう司しにオッケーをもらった。
I got the OK from my boss.
予よ定ていを変へん更こうしてもオッケー？
Is it all right if I change the plan?

noun

fine without; not needed; unnecessary

Used in the pattern ～なしでＯＫ or ～がなくてもＯＫ to mean something is fine or acceptable even without the mentioned item. Common in casual instructions or offers.

砂さ糖とうなしでオッケーです。
It's fine without sugar.
予よ約やくがなくてもオッケーですか？
Is it all right even without a reservation?

Usage patterns

〈物もの〉なしでもＯＫなしでもおっけーit's fine even without X
砂さ糖とうなしでもＯＫです。
It's fine even without sugar.
〈人ひと〉にＯＫをもらうにおっけーをもらうto get someone's OK / approval
先せん生せいにＯＫをもらった。
I got the teacher's OK.
ＯＫを出すおっけーをだすto give the go-ahead; to approve
上じょう司しが計けい画かくにＯＫを出だした。
My boss gave the go-ahead for the plan.
〈事こと〉はＯＫですはおっけーですX is fine / acceptable
遅ち刻こくはＯＫですが、連れん絡らくは必ひつ要ようです。
Being late is fine, but you need to let us know.

Related words

大だい丈じょう夫ぶN5sense 1
大丈夫 is a native Japanese word for 'all right' or 'safe' and works in more formal contexts than the casual loanword ＯＫ.
いいN5sense 1
いい is a basic adjective meaning 'good' or 'fine' and is grammatically more flexible and neutral in register than ＯＫ.
了りょう解かいN1sense 1
了解 specifically signals that a message or instruction has been understood and accepted, while ＯＫ can also mean simple approval or acceptability of a state.
よし
よし is a native Japanese interjection of approval or resolve, while オーケー is the casual loanword equivalent of 'OK' used similarly to signal agreement.

Opposites

だめN5sense 1
だめ means 'no good' or 'not allowed', the direct opposite of ＯＫ's sense of approval or acceptability.
ＮＧ
OK means something is fine or approved, the direct opposite of ＮＧ meaning it is rejected or not allowed.

Politeness

承しょう知ちhumble 謙譲語N3sense 1
承知 is the humble, business-appropriate way to acknowledge or accept something, used where the casual ＯＫ would sound too informal.

Written forms

ＯＫUsage91%
- オッケー
  Standard borrowed spelling; the most common written form.
- おーけー
  search-only kana form
オーケーUsage5%
Katakana spelling closer to the English original; less common than オッケー.
オッケーUsage2%
Common katakana spelling reflecting the most frequent pronunciation.
オーケイUsage1%
search-only kana form
オッケUsage<1%
search-only kana form
おっけーUsage<1%
search-only kana form
Search-only hiragana form; not a standard written variant.
おっけUsage<1%
search-only kana form

Etymology

Borrowed from English 'OK'/'okay'. The pronunciation オッケー reflects a common Japanese adaptation of the English sound.