Same word as unquieter:

active, agitated, antsy, anxious, bundle of nerves, bustling, changeable, disturbed, edgy, fidgeting, fidgety, fitful, footloose, fretful, hurried, ill at ease, inconstant, intermittent, irresolute, itchy, jumpy, nervous, nomadic, on edge, perturbed, restive, roving, sleepless, spasmodic, strung out, tossing and turning, transient, troubled, turbulent, uneasy, unpeaceful, unrestful, unruly, unsettled, unstable, unsteady, wandering, worried