Synonyms of unstable

1 Syllable

mad, weak, yoyo

2 Syllables

wonky, fickle, trickiest, tippier, trickier, madder, tippy, flighty, giddy, faithless, rootless, restless, ticklish, nutsy, wiggly, dubious, squiggly, tricky, maddest, unquiet, flightier, transient, moving, wayward, fitful, parlous, dingdong, dizzy, weaving, shaky, weakly, varying, changing, wobbly, rocky, suspect, shifty, unsound, shakiest, supplier, shakier, weak-kneed, doubtful, short-term, risky, yo-yo, lamster, flightiest, fickler, infirm

3 Syllables

mercurial, erratic, off-the-wall, aquake, ashake, unsettled, unshielded, unbacked, mobile, hysteric, psychiatric, perilous, movable, inconstant, capricious, unsure, neurotic, turbulent, precarious, vagarious, ambiguous, jeopardous, rickety, teetering, unscrewed, dangerous, fluctuating, slippery, unsteadfast, anile, variable, rattletrap, lubricious, motile, uneasy, untrusty, astraddle, unsteady, wavering, changeful, quicksilver, unsafe, mutable, fulminant, changeable, short-range, uncertain

4 Syllables

untrustworthy, unreliable, irrational, desultory, jellylike, sensitive, vertiginous, fugitive, obsessive, temporary, harebrained, volatile, unreasoning, borderline, cockamamie, maladjusted, on-the-fence, humorsome, reversible, dangersome, perishable, explosive, uncareful, transportable, insecure, destructible, impugnable, unbalanced, revocable, permutable, vacillating, bubbleheaded, eruptive, unequable, unconverted, inconsistent

5 Syllables

unpredictable, irresponsible, temperamental, psychoneurotic, maladaptive, emotionable, undependable, unstationary, decomposable, commutative, indecisive, irresolute, detonative

6 Syllables

hypersensitive