jitters

CIDE DICTIONARY

jitters, n. 

 an uneasy state; nervousness; as, the prospect of being drafted gave him a bad case of the jitters.  [WordNet 1.5]

THESAURUS

jitters

agitation, all-overs, apprehension, apprehensiveness, bluster, bobbery, boil, boiling, brouhaha, bustle, churn, cold shivers, cold sweat, commotion, conturbation, discomposure, disorder, disquiet, disquietude, disturbance, dither, dithers, ebullition, embroilment, excitement, ferment, fermentation, fever, feverishness, fidgets, flap, flurry, fluster, flutteration, foment, fume, fuss, heebie-jeebies, hubbub, hurly-burly, inquietude, jimjams, jumpiness, jumps, maelstrom, malaise, moil, nerves, nerviness, nervosity, nervousness, perturbation, queasiness, quivers, restlessness, roil, rout, row, seethe, seething, shakes, shivers, skittishness, stir, sweat, swirl, to-do, trembles, trepidation, trepidity, tumult, tumultuation, turbidity, turbulence, turmoil, twitter, unease, uneasiness, unrest, upset, willies