湧 boil, ferment, seethe, uproar, breed 12 strokes jōyō, taught in secondary school old JLPT 1 #2070 in newspapers Readings Onユウ、ヨウ、ユ Kunわ.く In Chinese 湧 Words written with it 湧く わく to well (up) N2 湧水 ゆうすい welling of water 湧出 ゆうしゅつ gushing out