godan verb (-ku), intransitive verb
wriggle; squirm; crawl like a worm
Describes the writhing movement of many small creatures, or a mass of things moving in a wriggling manner. Often used for insects, worms, or figuratively for crowds.
腐った肉に蛆がうごめいていた。
Maggots were wriggling in the rotten meat.
暗闇で何かがうごめく音がした。
I heard something squirming in the darkness.