〜だろ: You add だろ to the end of a sentence. It shows you are very sure about something. You might also use it to ask for agreement.

〜だろ

You add だろ to the end of a sentence. It shows you are very sure about something. You might also use it to ask for agreement.

N3 KMT4RoughCasualSentence Ending ParticleMixedMasculineSeeking Agreement And Confirmation CasualGrammar

Verb [dictionary form] + だろPrimary

い-Adjective + だろ

な-Adjective + だろ

Noun + だろ

You add だろ to the end of a sentence. It shows you are very sure about something. You might also use it to ask for agreement.

お前も行くんだろ？早く準備しろよ。

You're going too, right? Hurry up and get ready.

RoughNon PastAffirmativeSentence EndingConjecturalDaily Life

昨日のパーティー、すごく楽しかっただろ？

Yesterday's party was super fun, wasn't it?

CasualPastAffirmativeSentence EndingEmphaticDaily Life Music & Entertainment

まだ宿題が終わってないんだろ。遊びに行く前に終わらせなさい。

You haven't finished your homework yet, have you? Finish it before you go out to play.

CasualProgressiveNegativeSentence EndingConjecturalDaily Life Education Family & Relationships

結局、一番の問題は金だろ。

In the end, the biggest problem is money, isn't it?

RoughNon PastAffirmativeSentence EndingEmphaticBusiness & Finance

どうせ誰も来ないだろと思って、一人で映画を見に行った。

Figuring that nobody would come anyway, I went to see the movie by myself.

NeutralNon PastNegativeMid SentenceConjecturalDaily Life Emotions & Psychology

Your voice changes the feeling of だろ. A downward voice makes it a strong statement. Like saying, 'It's definitely true.' An upward voice makes it a strong question. Like asking, 'It's true, right?'

『だろ』 is like a strong version of 『でしょう』 and 『でしょ』. 『でしょう』 is polite. 『でしょ』 is casual. 『だろ』 sounds much more sure. It can even sound a bit like a challenge. 『でしょ』 is used by everyone. 『だろ』 is mostly used by men.

Don't use this when you need to be polite. Don't use this if you are a woman. It sounds very rough.

Less formal alternatives(3)

〜でしょう / 〜だろう

You use this to make a guess. It means 'probably' or 'I think'. You are not very sure.

〜でしょ

You use this word at the end of a sentence. It asks if someone agrees with you. You use it when you are sure they will say yes.

〜だろう

This is how you say you are guessing something. It means 'probably' or 'I think so'. You are not 100% sure.

Dialect / slang variants(1)

〜だべ

This word is like saying 'right?' or 'I guess' at the end of a sentence. It is a rough way to speak. People in some parts of Japan use it. It can sound like a tough way to talk.

辞書形

This is the basic form of a verb. It is what you find in a dictionary. You use it to make other verb forms.

〜い / 〜かった

This is the basic form of an い-adjective. It describes a quality of something. You use it for present or past qualities.

〜だ / 〜だった

This means 'is' or 'was'. It is the casual way to say 〜です and 〜でした.

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Dictionary

〜だろ

You add だろ to the end of a sentence. It shows you are very sure about something. You might also use it to ask for agreement.

N3 KMT4RoughCasualSentence Ending ParticleMixedMasculineSeeking Agreement And Confirmation CasualGrammar

Verb [dictionary form] + だろPrimary

い-Adjective + だろ

な-Adjective + だろ

Noun + だろ

You add だろ to the end of a sentence. It shows you are very sure about something. You might also use it to ask for agreement.

お前も行くんだろ？早く準備しろよ。

You're going too, right? Hurry up and get ready.

RoughNon PastAffirmativeSentence EndingConjecturalDaily Life

昨日のパーティー、すごく楽しかっただろ？

Yesterday's party was super fun, wasn't it?

CasualPastAffirmativeSentence EndingEmphaticDaily Life Music & Entertainment

まだ宿題が終わってないんだろ。遊びに行く前に終わらせなさい。

You haven't finished your homework yet, have you? Finish it before you go out to play.

CasualProgressiveNegativeSentence EndingConjecturalDaily Life Education Family & Relationships

結局、一番の問題は金だろ。

In the end, the biggest problem is money, isn't it?

RoughNon PastAffirmativeSentence EndingEmphaticBusiness & Finance

どうせ誰も来ないだろと思って、一人で映画を見に行った。

Figuring that nobody would come anyway, I went to see the movie by myself.

NeutralNon PastNegativeMid SentenceConjecturalDaily Life Emotions & Psychology

Don't use this when you need to be polite. Don't use this if you are a woman. It sounds very rough.

Less formal alternatives(3)

〜でしょう / 〜だろう

You use this to make a guess. It means 'probably' or 'I think'. You are not very sure.

〜でしょ

You use this word at the end of a sentence. It asks if someone agrees with you. You use it when you are sure they will say yes.

〜だろう

This is how you say you are guessing something. It means 'probably' or 'I think so'. You are not 100% sure.

Dialect / slang variants(1)

〜だべ

This word is like saying 'right?' or 'I guess' at the end of a sentence. It is a rough way to speak. People in some parts of Japan use it. It can sound like a tough way to talk.

辞書形

This is the basic form of a verb. It is what you find in a dictionary. You use it to make other verb forms.

〜い / 〜かった

This is the basic form of an い-adjective. It describes a quality of something. You use it for present or past qualities.

〜だ / 〜だった

This means 'is' or 'was'. It is the casual way to say 〜です and 〜でした.

Track your mastery

Kumi's KMT system tracks your mastery across kanji, vocabulary, grammar, and reading. Create a free account to use it on 220,000+ concepts.

〜だろ

Patterns4

Meaning

Examples5

Nuance1

Contrasts1

Restrictions1

Compare with4

Less formal alternatives(3)

Dialect / slang variants(1)

Prerequisites3

Track your mastery

〜だろ

Patterns4

Meaning

Examples5

Nuance1

Contrasts1

Restrictions1

Compare with4

Less formal alternatives(3)

Dialect / slang variants(1)

Prerequisites3

Track your mastery