2. inconstant, fickle, changeable, flighty, faddish; inconsistent, wishy-washy, indecisive, irresolute, erratic, labile; vacillating, wavering, fluctuating, mercurial, volatile; unpredictable, variable, vicissitudinous; impulsive, impetuous.
3. unsound, unsafe, unsure, infirm, insecure; unsteady, unstable, unsolid, insubstantial, ungrounded; shaky, rickety, shifty, shifting, slippery; dangerous, perilous, hazardous, risky; treacherous, tottery, rocky, uncertain.
under, prep. 1. beneath, below, underneath, Dial. neath; further down, lower down, lower than.
2. submerged in, immersed in, sunk in, drowned in; engulfed by, inundated by.
3. subordinate to, inferior to, secondary to, subservient to, subject to; lesser than, lower than, smaller than, cheaper than; at the foot of, under the heel of, at [s.o.'s] mercy, at [s.o.'s] beck and call, in [s.o.'s] clutches, in [s.o.'s] hands.
4. backed by, supported by, sponsored by, brought to one by, funded by, financed by; guarded by, guided by, fostered by, under the care of; under the auspices of, under the aegis of, under the eyes of.
-adv. 5. beneath, below, underneath, Dial, neath; subjacent, on the bottom, on the ground; underground, belowground, belowdecks, downstairs, Chiefly Brit, below stairs; underwater, submerged, immersed; underfoot.
6. below, short, less, behind, down; shy of, short of, this side of.
-adj. 7. lower, lowest, nether, subjacent; underwater, submarine, subaqueous, subterranean, submerged.
8. junior, younger, secondary, auxiliary, subordinate, cadet, lower; subaltern, subsidiary, underling, ancillary.
9. unconscious, hypnotized, mesmerized, out; senseless, comatose, insensible, numb, asleep, sleeping.
underbrush, n. undergrowth, underwood, underbush; brush, brushwood, scrub, bush, shrubs, brambles, briers, brier patch, vegetation, Brit. bracken; thicket, brake, copse, Chiefly Brit, coppice, boscage.
underclothes, n. underwear, underclothing, undergarments, underthings, underdress, underpinnings, undies, Facetious, unmentionables, Sl. skivvies. See - underwear.
undercover, adj. secret, hidden, concealed, secluded, screened, masked, veiled, cloaked, shrouded, ensconced, under wraps, behind the curtain or closed doors, in the dark; private, nonpublic, hush-hush, confidential, closed-door, closet, Archaic, privy; undisclosed, unrevealed, untold; covert, spy, intelligence, CIA, FBI; clandestine, underground, surreptitious, furtive, stealthy, sly, hugger-mugger, sneaky, underhand, underhanded,
undercurrent, n. 1. undertow, underset, riptide, crosscurrent, countercurrent.
2. undertone, overtone; hidden tendency, drift, trend; implication, suggestion, connotation, hint, murmur; latency, hidden feeling; atmosphere, tenor, aura, flavor.
undercut, v. 1. cut out, cut away, gouge out, scoop out, hollow out; excavate, undermine, mine.
2. undersell, undercharge, underprice, sell cheaply; sacrifice, sell at a loss,
underdog, n. 1. loser, weaker party, dark horse, out-of-towner, second-rater, also-ran.
2. victim, prey, Inf. little fellow, Sl. stooge, U.S. Sl. fall guy, scapegoat.
underestimate, v. undervalue, underrate, rate too low, sell short, hold for naught, hold cheap, misprize;