wriggling

Adjective

WordNet 3.0

Adjective (1)

moving in a twisting or snake-like or wormlike fashion“wiggly worms”Synonyms: wiggly wriggly writhing

Webster's Dictionary (GCIDE)

Wriggle \Wrig"gle\, v. i. [imp. & p. p. Wriggled; p. pr. & vb. n. Wriggling.] [Freq. of wrig, probably from OE. wrikken to move to and fro; cf. LG. wriggeln, D. wrikken, Sw. vricka, Dan. vrikke.] To move the body to and fro with short, writhing motions, like a worm; to squirm; to twist uneasily or quickly about. [1913 Webster]

Both he and successors would often wriggle in their seats, as long as the cushion lasted. --Swift. [1913 Webster]