訓 すす(ぐ),ゆす(ぐ) ・ 音 タク
Sino-Vietnamese: trạc
The water radical 氵 gives the meaning and 翟 the sound: washing with water. Sino-Vietnamese trạc, as in tẩy trạc (washing, laundry).
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日曜日に洗濯をする。 (にちようびにせんたくをする)
I do laundry on Sundays.