ここがいいだろう？

あなただろう。

これは、水（みず）だろう。

これは、右（みぎ）だろう？

初（はじ）めてだろう。

ミカサさんも医者（いしゃ）だろう？

これは、美味（おい）しいだろう。

これはペンだろう？

今夜（こんや）は、忙（いそが）しいだろう。

今日（きょう）は、雨（あめ）だろう。

これは、半分（はんぶん）だろう。

赤（あか）色（いろ）がいいだろう。

Using 「でしょう」 and 「だろう」 to express strong amount of certainty (casual)

Difference between そうです、ようです、だろう and らしいです

<div class='writeup-body'>だろう is a conjugated form of だ, and can also be seen in the contracted form だろ (more casual). だろう expresses that the speaker thinks that something is true (assertion/expectation), and also that the listener would probably agree with them. This comes across like 'right?', or 'probably' in English.<ul class='writeup-examples--holder'><li class='writeup-example'><div class='writeup-example--japanese'>お前（まえ）、明日（あした）パーティーに行（い）くだろ？</div><div class='writeup-example--english'>You are going to the party tomorrow, right?</div></li><li class='writeup-example'><div class='writeup-example--japanese'>明日（あした）は晴（は）れるだろう。</div><div class='writeup-example--english'>It will probably be clear tomorrow.</div></li></ul>だろう carries exactly the same meaning as でしょう (the polite equivalent). However, due to だ being more casual than です, だろう is also considered to be more casual/masculine than でしょう.<div class='writeup-caution'><div class='caution-header'>Caution</div>While だろう is usually used when the speaker has some sort of information that would support their assertion, it can also be used simply when the speaker 'feels' that something is true.<ul class='writeup-examples--holder'><li class='writeup-example'><div class='writeup-example--japanese'>これは、お菓子（かし）だろう？</div><div class='writeup-example--english'>This is candy, isn't it?</div></li></ul>In this kind of sentence that expresses a 'feeling' or 'hunch', だろう comes across as quite low confidence. The speaker's tone of voice will often reveal how confident だろう is.</div></div>

Grammar Info

だろう

Right?, Probably, Isn't it?