1. (superl.) Shaking or trembling; as, a shaky spot in a marsh; a shaky hand.

2. (superl.) Full of shakes or cracks; cracked; as, shaky timber.

3. (superl.) Easily shaken; tottering; unsound; as, a shaky constitution; shaky business credit.

adrift afloat agitated aguey aguish algid all shook up all-overish anile aquiver aspen bagging baggy bashful blue with cold blurred breathy chattering chilly choked choking clear cold cool cowardly crabbed croaking dangerous dangling debilitated decrepit desultory dickey diffident dilapidated dithery doddered doddering doddery doubtful drawling drawly drooping dubious dysphonic easy fearful fearing fearsome feeble fidgeting fidgety flapping flimsy floating fluctuant fluttery fossilized free frozen frozen to death gerontal gerontic goosy groggy guttural half-frozen hanging harsh hawking hazardous hoarse iffy in a quiver in fear inarticulate indecisive indistinct infirm insecure insubstantial jittery jumpy lax lisping loose mispronounced mossbacked moth-eaten mousy mummylike muzzy nasal nervous palsied papery-skinned perilous precarious problematic provisional quaking quavering quavery questionable quivering quivery rabbity rachitic rackety ramshackle rattletrap ravaged with age relaxed ricketish rickety risky rocky rootless run to seed rusty scary senile shaking shifting shifty shivering shivery shook up shrinking shriveled shuddering shy skittery skittish slack slippery sloppy snuffling spidery spindly startlish stifled strangled streaming stricken in years succussatory succussive suspect teetering teetery temporary tentative tenuous thick throaty ticklish timeworn timid timorous tottering tottery treacherous trembling trembly tremulant tremulous trepidant trigger-happy tumbledown twangy twitchy twittery unanchored unbound uncertain unclear undependable undone unfaithworthy unfastened unfixed unhealthy unpredictable unreliable unsafe unsettled unsolid unsound unstable unsteadfast unsteady unstuck unsubstantial unsubstantiated unsupported unsure untied untrustworthy vacillating velar vibrating wavering weak with chattering teeth withered wizened wobbling wobbly