slippery as an eel

*slippery as an eel

devious and untrustworthy, but impossible to catch. (*Also: as ~.) Don't sign a lease with that landlord; I think he's as slippery as an eel. The con artist was slippery as an eel. Although he defrauded many people, he never went to prison.
See also: eel, slippery

slippery as an eel

Elusive, devious, as in When it comes to talking about his investments, Jim's slippery as an eel. This simile, first recorded about 1412, alludes to the eel's skin, which has tiny scales and is quite slippery when wet.
See also: eel, slippery
References in classic literature ?
This is you, who have been as slippery as an eel this last month, and as thorny as a briar-rose?
It's no exaggeration to say you are as slippery as an eel.
If you try to catch one they are as slippery as an eel and will probably escape leaving silvery scales on your fingers.
Sir, -Derek Bennett (Post, Jun 25) is as slippery as an eel on the question of motoring taxes.
Luther said that Erasmus was as slippery as an eel.