だろう
I think; it seems; probably; right?
JLPT
N4
構造
V・A・Na・N + だろう
意味
This structure is used to express subjective speculation based on the speaker's intuition, often with a lowering of tone at the end of the sentence. Compared to 「かもしれない」, this construction indicates a higher level of certainty from the speaker. 「でしょう」is a more formal version of 「だろう」.
明日
は
雨
が
降
るだろう
。
It will rain tomorrow.
彼女
は
今晩
の
パーティー
に
来
ないだろう
。
She won't come to the party tonight.
この
靴
は
丈夫
だろう
。
These shoes will be durable.
