English adjective: treacherous
|1.||treacherous dangerously unstable and unpredictable|
|Samples||Treacherous winding roads.|
An unreliable trestle.
|2.||treacherous tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans|
The perfidious Judas.
The fiercest and most treacherous of foes.