back down, balance, blench, boggle, debate, deliberate, demur, falter, fear, fight shy of, flinch, hang back, hang off, have qualms, hem and haw, hesitate, hold off, hover, hum and haw, jib, make bones about, pause, ponder, pull back, quail, recoil, retreat, scruple, shilly-shally, shrink, shy, shy at, stickle, stop to consider, straddle the fence, strain, strain at, think twice about, waver, wince, withdraw, yield