Select the most appropriate meaning of the given idiom.

Snake in the grass

Treacherous person

The most appropriate meaning of the given idiom "snake in the grass" is a treacherous person.

It is an idiom that is used to describe someone who is deceitful or untrustworthy. The idiom is thought to have originated from the idea that a snake can be hidden in the grass and can strike without warning.

For example, you might say "Don't trust him. He's a snake in the grass." This means that the person is not to be trusted because they are deceitful or untrustworthy.

The other options are not accurate descriptions of the meaning of the idiom.

• Co-operative person: This is not the opposite of being treacherous.
• Sensitive person: This is not related to the meaning of the idiom.
• Successful person: This is not related to the meaning of the idiom.