Ambush

An ambush is a surprise attack by people laying in wait in a concealed position.

It can also be used in conversation. Such as asking a question you already know the answer to. That could be considered “setting an ambush”.

The word can be traced all the way back through Middle English, to Old French (embusche (noun), (embushier) (verb), to Latin where it translates to “bush”. Yes, as you may have suspected, ambush comes from the word people used when someone hid in a bush. The noun version, “It was an ambush!” dates to the 15th century.