n. 25B6; verb
he ruffled her hair : DISARRANGE, tousle, dishevel, rumple, riffle, disorder, mess up, tangle; N. Amer. informal muss up.
the wind ruffled the water : RIPPLE, riffle.
don't let him ruffle you : ANNOY, irritate, vex, nettle, anger, exasperate; disconcert, unnerve, fluster, agitate, harass, upset, disturb, discomfit, put off, perturb, unsettle, bother, worry, trouble; informal rattle, faze, throw, get to, rile, needle, aggravate, bug, peeve; Brit. informal wind up, nark.
smooth, soothe.
25B6; noun a shirt with ruffles : FRILL, flounce, ruff, ruche, jabot, furbelow.