Synonyms of treacherous

Adjective

1. treacherous, unreliable, dangerous (vs. safe), unsafe

usage: dangerously unstable and unpredictable; "treacherous winding roads"; "an unreliable trestle"

2. punic, perfidious, treacherous, unfaithful (vs. faithful)

usage: 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"

Definition and meaning of treacherous (Dictionary)