DISCOMFIT

v. 25B6; verb EMBARRASS, abash, disconcert, nonplus, discompose, discomfort, take aback, set someone back on their heels, unsettle, unnerve, put someone off their stroke, ruffle, confuse, fluster, agitate, disorientate, upset, disturb, perturb, distress; chagrin, mortify; informal faze, rattle; N. Amer. informal discombobulate.