だもんな

after all

→ だ

phrase Rare #40,620

after all A casual sentence-ending expression that adds an explanation or emphasizes something the speaker assumes the listener understands.

JA: 今日は休みだもんな。

EN: It is a day off, after all.

It does get in the way visually, after all.

ホテル･アドリアーノのマダム･ジーナは―国の飛行艇乗りにも有名だもんな

Madame Gina of Hotel Adriano is famous even among the country's seaplane pilots, after all.

— 紅の豚 (1992)

For soldiers, carrying out the mission comes first, after all.

— es［エス］ (2001)