"flexible and graceful," 1791, from willow + -y (2). Earlier "bordered or shaded by willows" (1751). Willowish is older (1650s) but only in reference to the color of willow leaves. Related: Willowiness.
William
willies
willing
will-o'-the-wisp
willow
willowy
willpower
willy-nilly
Wilsonian
wilt
wily
