訓 たま ・ 音 グウ
Sino-Vietnamese: ngẫu
The person radical 亻 plus 禺 for sound: originally a human figurine. Sino-Vietnamese ngẫu, as in ngẫu nhiên (by chance).
Stroke data: KanjiVG (CC BY-SA 3.0) — kanjivg.tagaini.net
駅で偶然、先生に会った。 (えきでぐうぜんせんせいにあった)
I ran into my teacher at the station by chance.