One entry found for
willy-nilly.
Main Entry:
wil·ly-nil·ly 
Pronunciation:
wil-
-
nil-
Function:
adverb or adjective
Etymology: an altered form of the phrase
will I nill I or
will ye nill ye; nill, an ancient negative form of
will, from Old English
nyllan, a combination of
ne "not" and
wyllan "to wish, will"
1 : by force
: without choice <rushed us along
willy-nilly>
2 : in an unpredictable manner <children running about
willy-nilly>