plied, implicit; unstated, undeclared, unexpressed. See unsaid.
2. silent, mute, mum, unspeaking, tight-lipped, closemouthed, quiet, not talking, voiceless, wordless, speechless, dumfounded.
unstable, adj. 1. unsteady, not fixed, astatic, unsettled, insecure; tottery, shaky, wobbly, tippy; teetering, faltering, stumbling, staggering; precarious, labile; unpredictable, risky, hazardous, perilous; on the brink, swaying, shifting.
2. inconstant, unsteadfast, changeable, variable, mutable, permutable; fickle, capricious, moody, volatile, mercurial, flighty, giddy; inconsistent, indecisive, irresolute, indefinite, vacillating, fluctuating, wavering, tergiversating, blowing hot and cold; undependable, fly-by-night, untrustworthy, unreliable, faithless; desultory, stop-and-go, come-and-go.
3. eccentric, erratic, peculiar, queer, odd; irrational, SI. goofy, SI. wacky, SI. nutty, SI. far out, SI. spacey; deranged, unbalanced, unhinged, SI. unglued, unstrung.
4. irregular, jumpy, choppy, spasmodic; jerky, fitful, spastic.
unstrung, adj. weakened, enervated, spent, drained, emptied; worn out, played out, exhausted, fatigued, wrung out; quivering, shaky, like a bowl of Jello, shaking like a leaf, unsteady; agitated, perturbed, troubled, disturbed; unnerved, unmanned, shaken, flustered, upset, discouraged, frustrated, Inf. discombobulated; disconcerted, discomposed, bewildered, Inf. fazed, confounded, distracted; unbalanced, unhinged, SI. unglued, disoriented, deranged.
unstuck, adj. 1. unfastened, unattached, unfixed, unglued, apart at the seams; unsnapped, unhooked, undone, loosened, loose, freed, free, opened, open; unplugged, unclogged, unstopped, uncorked, unjammed. 2. chaotic, disorganized, disordered, out of order, disarranged, deranged, unarranged; confused, in disarray, incoherent, incohesive; jumbled, helter-skelter, higgledy-piggledy, harum-scarum, topsy-turvy, skimble-scamble, SI. arsy-varsy.
unstudied, adj. 1. unpremeditated, unlabored, natural, normal, unaffected; spontaneous, impromptu, extemporaneous, extempore, offhand, offhanded, U.S. Inf. off-the-cuff, informal, casual; unpretentious, without airs, Inf. down-home, unassuming, modest, simple.
2. unversed, unread, ignorant, unknowledgeable, unknowing, unenlightened, uninformed; uneducated, unschooled, unlearned, untutored, untaught, uninstructed; undisciplined, untrained, raw, green, inexperienced; unskilled, inexpert, inefficient, incompetent, unqualified; amateur, unprofessional, nonprofessional.
unsubstantial, adj. 1. insubstantial, fanciful, fancied, imaginary, imagined, chimerical, unreal, visionary, quixotic; airy, vaporous, wild, idle, empty; fantastic, make-believe, mythical, fairy-tale, fictitious, made-up; illusory, illusive, delusive, false, hallucinatory, phantom, phantasmal, spectral, ghostly; intangible, impalpable, immaterial, incorporeal, disembodied, bodiless.
2. paltry, inadequate, insufficient, meager, mere, small, puny, dinky, SI. lousy, SI. crummy; insignificant, unimportant, of little or no import, negligible, nugatory, inconsiderable, inconsequential; trivial, trifling, petty, niggling, minor, piddling, Inf. picayune.
3. flimsy, tenuous, poor, worry, weak, lame; shallow, superficial, cursory; ungrounded, groundless, unfounded, unsupported, unbased, baseless; illogical, unlogi-cal, unsound, fallacious, erroneous, faulty, Inf. full of holes, untenable; feeble, frail, fragile, slight, thin, watery, watered-down; delicate, dainty, light, fine, sheer, diaphanous, ethereal, gauzy, gossamer, cobwebby; cheap, Sl. cheesy, inferior, Inf no-good, useless, worthless, rickety, jerry-built; jury-rigged, makeshift, stopgap.