Search Result for "treacherous": 
Wordnet 3.0


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

2. tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans;
- Example: "Punic faith"
- Example: "the perfidious Judas"
- Example: "the fiercest and most treacherous of foes"
- Example: "treacherous intrigues"
[syn: punic, perfidious, treacherous]

The Collaborative International Dictionary of English v.0.48:

Treacherous \Treach"er*ous\, a. [See Treacher.] Like a traitor; involving treachery; violating allegiance or faith pledged; traitorous to the state or sovereign; perfidious in private life; betraying a trust; faithless. [1913 Webster] Loyal father of a treacherous son. --Shak. [1913 Webster] The treacherous smile, a mask for secret hate. --Cowper. [1913 Webster] Syn: Faithless; perfidious; traitorous; false; insidious; plotting. [1913 Webster] -- Treach"er*ous*ly, adv. -- Treach"er*ous*ness, n. [1913 Webster]
WordNet (r) 3.0 (2006):

treacherous adj 1: dangerously unstable and unpredictable; "treacherous winding roads"; "an unreliable trestle" [syn: treacherous, unreliable] 2: tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans; "Punic faith"; "the perfidious Judas"; "the fiercest and most treacherous of foes"; "treacherous intrigues" [syn: punic, perfidious, treacherous]
Moby Thesaurus II by Grady Ward, 1.0:

91 Moby Thesaurus words for "treacherous": Machiavellian, Punic, ambidextrous, artful, calculating, chancy, chiseling, collusive, covinous, crafty, crooked, cunning, dangerous, deceitful, deceptive, desultory, dishonest, disloyal, double, double-crossing, double-dealing, double-faced, double-minded, double-tongued, doublehearted, doubtful, dubious, duplicitous, faithless, false, false-principled, falsehearted, finagling, fraudulent, furtive, guileful, hairy, hazardous, indirect, infirm, insecure, insidious, insubstantial, jeopardous, misleading, perfidious, perilous, precarious, precariousness, provisional, recreant, risky, rocky, scheming, shaky, sharp, shifting, shifty, slippery, sneaky, surreptitious, temporary, tentative, ticklish, tottery, traitorous, trickish, tricky, two-faced, uncertain, undependable, underhand, underhanded, unfaithful, unfaithworthy, unhealthy, unloyal, unpredictable, unreliable, unsafe, unsolid, unsound, unstable, unsteadfast, unsteady, unsubstantial, unsure, untrue, untrustworthy, wicked, wily