/wil"ee nil"ee/ , adv.
1. in a disorganized or unplanned manner; sloppily.
2. whether one wishes to or not; willingly or unwillingly: He'll have to do it willy-nilly.
adj.
3. shilly-shallying; vacillating.
4. disorganized, unplanned; sloppy: willy-nilly work.
[ 1600-10; from the phrase will ye, nill ye. See WILL 1 , NILL ]