ユウ、ヨウ、ユ

わ.く

湧, 氵, 勇, マ, 男, 田, 力

boil, ferment, seethe, uproar, breed

湧く(わく): (1) to well (up); to gush forth (of water); to spring out; to surge (2) to appear (esp. suddenly) (sweat, tears, etc.) (3) to feel emotions form (joy, bravery, etc.) (4) to hatch (esp. of parasitic insects, etc.)