n. 25B6; verb she was flustered by his presence : UNSETTLE, make nervous, unnerve, agitate, ruffle, upset, bother, put on edge, disquiet, disturb, worry, perturb, disconcert, confuse, throw off balance, confound, nonplus; informal rattle, faze, put into a flap, throw into a tizzy; Brit. informal send into a spin; N. Amer. informal discombobulate.
calm.
25B6; noun I was in a terrible fluster : STATE OF AGITATION, state of anxiety, nervous state, panic, frenzy, fret; informal dither, flap, tizz, tizzy, tiz-woz, twitter, state, sweat; N. Amer. informal twit.
state of calm.