💡 Switch to Hiragana only or Rōmaji if you're just starting out.
What is だろう?
だろう is the casual/plain form of でしょう. It expresses probability ("probably"), conjecture ("I think"), or seeks agreement ("right?"). It's very common in spoken Japanese among friends.
Note the question mark or rising tone turns it into "right?" / "isn't it?".
🗣️ Mini Dialogue
A: この店、高いかな？このみせ、たかいかな？Kono mise, takai kana?
B: うん、高いだろうね。うん、たかいだろうね。Un, takai darou ne.
("Is this place expensive, I wonder?" — "Yeah, probably expensive.")
When to Use in Real Japan
Making predictions with friends:明日は雪だろう。あしたはゆきだろう。Ashita wa yuki darou.
Seeking casual confirmation:これでいいだろう？これでいいだろう？Kore de ii darou?
Expressing assumption:彼は来ないだろう。かれはこないだろう。Kare wa konai darou.
⚡ だろう vs でしょう vs かもしれない: Degrees of Certainty
Form
Formality
Certainty
Example
だろう
Casual
High (probably)
雨だろう
でしょう
Polite
High
雨でしょう
かもしれない
Casual
Low (might)
雨かもしれない
💡 Exam tip: だろう expresses more certainty than かもしれない, but less than はずだ (should be).
This lesson is taught by Anup Sensei, an experienced Japanese language instructor at Gogaku Language & Training Center in Pokhara. He has studied and worked in Japan and specializes in practical JLPT preparation and real-life communication skills.
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