ache, agonize, ail, anguish, avoid, blanch, bleach, blink, boggle, cringe, decolor, decolorize, demur, dodge, draw back, duck, evade, fade, fall back, falter, feel pain, feel the pangs, fight shy of, flinch, funk, grimace, hang back, hang off, have a misery, have qualms, hesitate, hold off, hurt, jib, make bones about, pause, pound, pull back, quail, recoil, reel back, retreat, scruple, sheer off, shoot, shrink, shrink back, shy, shy at, sidestep, smart, squinch, start, start aside, start back, stick at, stickle, strain, suffer, swerve, thrill, throb, tingle, turn aside, twinge, twitch, waver, weasel, weasel out, white, wince, writhe