“Will ye, nill ye” or “will he, nill he” means “whether one wishes to or not.” The phrase is a gem of the English language: its two verbs hold exactly opposite meanings, and yet rhyme with each other. “Will” means to wish for something—to “will” something—and “nill” means not to will something.  The phrase has since evolved into the single word “willy-nilly,” which we use to describe actions performed in a disorganized, chaotic, or random manner.