Synonyms: treacherous, perfidious, punic
Definition: tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans
Usage: Punic faith; the perfidious Judas; the fiercest and most treacherous of foes; treacherous intrigues
Similar words: unfaithful
Definition: not true to duty or obligation or promises
Usage: an unfaithful lover
Synonyms: treacherous, unreliable
Definition: dangerously unstable and unpredictable
Usage: treacherous winding roads; an unreliable trestle
Similar words: dangerous, unsafe
Definition: involving or causing danger or risk; liable to hurt or harm
Usage: a dangerous criminal; a dangerous bridge; unemployment reached dangerous proportions