speak with a forked tongue

Etymology

 * Possibly from the split tongue of a snake.

Verb

 * 1)  To speak deceptively; to be duplicitous or untruthful.

Translations

 * Dutch: met twee monden spreken
 * Finnish: puhua yhtä ja sitten toista
 * Polish: ,
 * Spanish: hablar con lengua viperina
 * Swedish: