訓 き(める) ・ 音 ケツ
漢越音: quyết
氵(water) for meaning, 夬 for sound: breaching a dyke so the water bursts through and never turns back. To decide, to settle.
Stroke data: KanjiVG (CC BY-SA 3.0) — kanjivg.tagaini.net
旅行の日を決めました。 (りょこうのひをきめました)
I decided the date of the trip.