KanjiJLPT N2
Coach

coach, command, urge, lead, supervise

Mnemonic

Your younger uncle became the team's coach. He has one piercing eye that never blinks—scanning the field, catching every lazy step. Players swear his eye can see through walls. No one dares slack off when younger uncle is prowling the sideline.
Additional thoughts
Picture your younger uncle on the sideline with one enormous, glowing eye hovering above him, surveying the whole field. The eye represents his relentless supervision; the familial authority of an uncle makes his coaching feel personal and inescapable.
Quick recall
Younger uncle with a relentless eye on the field is your coach.

Details

The keyword for 督 is coach. This kanji conveys the idea of overseeing, supervising, or directing others, much as a coach guides and instructs a team. It carries the sense of urging people forward, keeping them on track, and holding them accountable for their performance. The character is commonly associated with leadership roles that involve monitoring progress and encouraging improvement.
On'yomi
とく