Synonyms and Antonyms of stable
1 marked by the ability to withstand stress without structural damage or distortion <the observation tower is stable enough to withstand the strongest winds without collapsing> Synonyms bombproof, fast, firm, sound, stalwart, strong, sturdy Related Words dependable, durable, reliable; infrangible, irrefragable, unbreakable; beefy, solid; cohesive, tough Near Antonyms infirm, insecure, weak; shaky, tottering, tottery, unbalanced, wobbly (also wabbly); unsubstantial Antonyms rickety, unsound, unstable, unsteady
2 having been established and usually not subject to change <a troubled nation badly in need of a stable government> Synonyms certain, determinate, final, firm, flat, frozen, hard, hard-and-fast, inexpugnable, set, settled, fixedRelated Words nonadjustable, noncancelable, nonnegotiable, unchangeable; constant, steady, unchanging, uniform, unwavering; definite, exact, explicit, specific; given, stated, stipulated; dependable, good, reliable, responsible, safe, solid, sure, tried, tried-and-true, true, trustworthy, trustyNear Antonyms adjustable, changeable, negotiable; indefinite, open-ended, unspecified; capricious, changeful, flickery, fluctuating, fluid, inconstant, mercurial, mutable, temperamental, uncertain, unpredictable, unsettled, unstable, unsteady, variable, volatile
3 having full use of one's mind and control over one's actions <she made some strange decisions back when she wasn't entirely stable> Synonyms balanced, clearheaded, compos mentis, lucid, normal, right, saneRelated Words analytic (or analytical), clear, coherent, logical, rational, reasonable; even-keeled, judicious, levelheaded, sensible, wise; healthy, sound, unneurotic; well-adjusted, well-balancedNear Antonyms balmy, bananas, batty, bughouse [slang], certifiable, crackbrained, cracked, crackpot, cranky [dialect], cuckoo, daffy, daft, dotty, fruity [slang], gaga, loco [slang], loony (also looney), loopy, meshuga (or meshugge also meshugah or meshuggah), moonstruck, nuts, nutty, scatty [chiefly British], screwy, wacko (also whacko), wacky (also whacky); aberrant, delirious, disordered; delusional, delusionary, disturbed, neurotic, obsessive-compulsive, paranoiac (also paranoic), paranoid (also paranoidal), psycho, psychotic, schizo, schizoid, schizophrenic, schizy (or schizzy); eccentric, odd, oddball, off, pixilated (also pixillated), potty [chiefly British], queer, strange; foolish, senseless, witless; irrational, mixed-up, unreasonable; depressed, despondent; distracted, distraught, frantic, frenzied, haywire, hysterical (also hysteric), raving, wigged-out; amok (or amuck), ape, ballistic, berserk, nuclear; fixated, monomaniac, monomaniacal, obsessedAntonyms brainsick, crazed, crazy, demented, deranged, insane, lunatic, mad, maniacal (also maniac), mental, unbalanced, unsound
4 not undergoing a change in condition <a stable economic climate is best for business> Synonyms changeless, constant, stationary, steady, unchanging, unvaryingRelated Words fast, fixed, hard-and-fast, immutable, inflexible, invariable, unalterable, unchangeable; established, set, settled; ceaseless, continuing, durable, enduring, lasting, permanentNear Antonyms adaptable, alterable, changeable, flexible, mutable, variable; ephemeral, evanescent, fleeting, momentary, transient, transitory; kaleidoscopic, phantasmagoric (or phantasmagorical)Antonyms capricious, changeful, changing, fickle, fluctuating, fluid, inconstant, mercurial, skittish, uncertain, unpredictable, unsettled, unstable, unsteady, varying, volatile
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