訓 おく(れる),おく(らす),おそ(い) ・ 音 チ
Sino-Vietnamese: trì
The walking radical 辶 signals movement: dawdling along makes you slow and late, as in delay.
Stroke data: KanjiVG (CC BY-SA 3.0) — kanjivg.tagaini.net
電車が遅れて、学校に遅刻した。 (でんしゃがおくれてがっこうにちこくした)
The train was delayed, so I was late for school.