偉い
えらい · erai · JLPT N2 · i-adj
great
🏆👑 erai sounds like 'a ray': someone great lets off a ray of glory
The kanji 偉 has the person radical 亻 on the left, so it describes people: someone great, important or admirable. Parents say えらい! to a child who did well, much like 'Good job!'