だろうか

(Daro u ka)

Used to express doubt, uncertainty, or to wonder about something.

Connection rules

この計画けいかくで本当ほんとうにうまくいくのだろうか。

Kono keikaku de hontouni umaku iku no daro u ka.

I wonder if things will really go well with this plan.

「Uncertain business meeting.」

彼かれは今日きょう、約束やくそくの時間じかんに来きてくれるだろうか。

Kare ha kyou, yakusoku no jikan ni ki te kureru daro u ka.

I wonder if he will come at the appointed time today.

「Waiting for a friend.」