To move or proceed with short irregular motions up and down or from side to side
Dean felt her wiggle out of her bike shorts and then turn to her side, facing him.
After having her wiggle her toes and move her ankle this way and that, he finally stepped back and observed her with a frown.
The precise type of dress to wear has some wiggle room, as a ball gown rather than an evening gown is expected by some hosts, while others find an evening gown totally acceptable.
It is certainly worth it to try to attempt to negotiate a debt settlement because most creditors have some wiggle room in how much money they can accept for a debt.
First, if your daughter was a straight A or mostly all A student and NOT in jeopardy of losing her spot on the honor society, then she may have some wiggle room for her point of view.