Search Result for "unreliable": 
Wordnet 3.0


1. liable to be erroneous or misleading;
- Example: "an undependable generalization"
[syn: undependable, unreliable]

2. not worthy of reliance or trust;
- Example: "in the early 1950s computers were large and expensive and unreliable"
- Example: "an undependable assistant"
[syn: unreliable, undependable]

3. dangerously unstable and unpredictable;
- Example: "treacherous winding roads"
- Example: "an unreliable trestle"
[syn: treacherous, unreliable]

4. lacking a sense of responsibility;

The Collaborative International Dictionary of English v.0.48:

Unreliable \Un`re*li"a*ble\, a. Not reliable; untrustworthy. See Reliable. -- Un`re*li"a*ble*ness, n. [1913 Webster] Alcibiades . . . was too unsteady, and (according to Mr. Coleridge's coinage) "unreliable;" or perhaps, in more correct English, too "unrelyuponable." --De Quincey. [1913 Webster]
WordNet (r) 3.0 (2006):

unreliable adj 1: liable to be erroneous or misleading; "an undependable generalization" [syn: undependable, unreliable] 2: not worthy of reliance or trust; "in the early 1950s computers were large and expensive and unreliable"; "an undependable assistant" [syn: unreliable, undependable] [ant: dependable, reliable] 3: dangerously unstable and unpredictable; "treacherous winding roads"; "an unreliable trestle" [syn: treacherous, unreliable] 4: lacking a sense of responsibility
Moby Thesaurus II by Grady Ward, 1.0:

134 Moby Thesaurus words for "unreliable": adrift, afloat, alternating, amorphous, capricious, changeable, changeful, coquettish, dangerous, desultory, deviable, disreputable, dizzy, doubtful, dubious, eccentric, erratic, faddish, faithless, false, falsehearted, fast and loose, fickle, fitful, flickering, flighty, flimsy, flirtatious, flitting, fluctuating, fly-by-night, freakish, garbled, giddy, hazardous, impetuous, impulsive, inaccurate, inauthentic, inconsistent, inconstant, indecisive, inexact, infirm, insecure, insubstantial, irregular, irresolute, irresponsible, light, mazy, mercurial, miscited, misquoted, misreported, misstated, moody, perfidious, perilous, precarious, provisional, questionable, quicksilver, rambling, restless, risky, rocky, roving, scatterbrained, shaky, shapeless, shifting, shifty, shuffling, skittish, slick, slippery, spasmodic, spineless, spurious, temporary, tentative, ticklish, tottery, toying, treacherous, tricky, trustless, unaccountable, unassured, unauthentic, unauthoritative, uncertain, uncontrolled, undependable, undisciplined, unfaithful, unfaithworthy, unfixed, unfounded, unhealthy, unpredictable, unrestrained, unsafe, unsettled, unsolid, unsound, unstable, unstable as water, unstaid, unsteadfast, unsteady, unsubstantial, unsure, untrue, untrustworthy, untrusty, vacillating, vagrant, variable, versatile, vicissitudinary, vicissitudinous, volatile, wandering, wanton, wavering, wavery, wavy, wayward, weak, whimsical, wishy-washy, workaday