- unstable
- I(New American Roget's College Thesaurus)adj. irregular, fluctuating, unsteady; inconstant, vacillating, fickle, changeable, variable. See changeableness.II(Roget's IV) modif.1. [Having a high center of gravity]Syn. unsteady, wavering, unbalanced, giddy, wobbly, wiggly, weaving, shifty, precarious, top-heavy, teetering, shifting, uncertain, rattletrap, beetling, jutting, lightly balanced.Ant. firm*, steady, solid.2. [Easily disturbed]Syn. variable, changeable, inconstant, giddy, capricious, fluctuating, shifty, volatile, rootless, dizzy, unpredictable, uncertain, sensitive, oversensitive, thin-skinned, timid, delicate.3. [Subject to fission]Syn. fissionable, fissiparous, fractionable; see weak 2 .See Synonym Study at inconstant .III(Roget's 3 Superthesaurus) a.1. unfixed unsteady, unbalanced, variable, wobbling, shaky, rickety, teetering, unanchored.2. changeable erratic, capricious, fickle, unpredictable, mercurial, vacillating, volatile.ANT.: 1. fixed, rock-solid, anchored, secure. 2. constant, steady, unchangingIV(Roget's Thesaurus II) adjective 1. Capable of or liable to change: alterable, changeable, fluid, inconstant, mutable, uncertain, unsettled, unsteady, variable, variant. Archaic: various. See CHANGE. 2. Following no predictable pattern: capricious, changeable, erratic, fantastic, fantastical, fickle, freakish, inconsistent, inconstant, mercurial, temperamental, ticklish, uncertain, unpredictable, unsteady, variable, volatile, whimsical. See CHANGE, CONTINUE. 3. Lacking stability: infirm, insecure, precarious, shaky, tottering, tottery, unsteady, unsure, weak, wobbly. See CHANGE, STRONG. 4. Not physically steady or firm: precarious, rickety, shaky, tottering, tottery, unsteady, wobbly. See FLEXIBLE.
English dictionary for students. 2013.