Answer: WIGGLES

AnswerCrossword Clue
WIGGLESEmulates Jell-O
WIGGLESWavy lines
WIGGLESDoesn't sit tight
WIGGLESEmulates a hula dancer
wigglesWIGGLE, to waggle (to move from side to side, also WAG)
wigglesAvoid (something), esp. by devious means
wigglesMove or cause to move up and down or from side to side with small rapid movements