訓 まにま(に),したが(う) ・ 音 ズイ
Sino-Vietnamese: tùy
Read tùy in Vietnamese, as in following or at will; the walking element 辶 suggests going along after someone.
Stroke data: KanjiVG (CC BY-SA 3.0) — kanjivg.tagaini.net
随分寒くなりましたね。 (ずいぶんさむくなりましたね)
It has gotten quite cold, hasn't it?