Do not trust him, he speaks with a forked tongue.
speak with a forked tongue
idiomTo speak deceptively; to be duplicitous or untruthful.
Origin
disputed origin* Possibly from the split tongue of a snake.
The politician promised lower taxes, but his recent actions suggest he speaks with a forked tongue.
Despite his charming demeanor, the diplomat was known to speak with a forked tongue, often promising peace while secretly arming the opposition.
- 01
bite one's tongue
To resist the urge to speak out, especially in order to avoid saying something inappropriate or likely to cause a dispute.
- 02
cat got someone's tongue
Why is someone not saying anything?
- 03
civil tongue
A polite manner of speaking.
- 04
find one's tongue
To speak after being unable to do so or after remaining silent; to find something to say.
- 05
forked tongue
The characteristic of deceptiveness; duplicity; untruthfulness.
- 06
hold one's tongue
To refrain from talking about something.
- 07
keep a civil tongue in one's head
To maintain a polite manner of speaking.
- 08
lay one's tongue to
To say; to name; to think of to say.