Same word as palpitant:

afraid, agitated, alarmed, all nerves, anguished, anxious, apprehensive, bothered, constrained, discomposed, dismayed, disquieted, disturbed, edgy, fearful, fidgety, fretful, harassed, ill at ease, impatient, in turmoil, insecure, irascible, irritable, jittery, jumpy, nervous, on edge, on the qui vive, palpitant, peevish, perplexed, perturbed, precarious, restive, restless, shaken, shaky, strained, suspicious, tense, tormented, troubled, unquiet, unsettled, unstable, upset, vexed, worried, wrung