Not trust (someone) farther than (one) can throw (them) American British informal
To be extremely skeptical of someone
All of the members are not allowed to share any information regarding the project with outsiders? We can't trust anyone farther than we can throw them.
The reactionaries are scattering the fake news with aim of ruining the image of the state, but I wouldn't trust them farther than I can throw them.
I would not trust that guy farther than I can throw him after what he had done to me.
Used for saying that there is something suspicious or wrong
To have no faith or confidence in something
Used to indicate a dubious, suspicious, or potentially immoral or illegal past history.
If you describe someone as shifty-looking, they seem dishonest, untrustworthy, or suspicious.
To distrust someone.