a snake (in the grass)

idiomPart ofgrass

a snake (in the grass) — idiom

1. This describes a person who pretends to be friendly but is actually dishonest an

1.idiom
Definition

This describes a person who pretends to be friendly but is actually dishonest and untrustworthy.

Example

Diego thought he had a loyal friend, but that snake in the grass betrayed his secret.

Be careful of Sara; she's a snake in the grass who smiles while plotting against you.