The term 'wait in hiding to attack' can be summarized by two words: AMBUSH and WAYLAY. AMBUSH is a military tactic where a group of attackers hide and wait for an unsuspecting enemy to come by, then they launch a surprise attack. WAYLAY is similar to AMBUSH, but it is usually used to describe a criminal act, such as robbers lying in wait to rob someone. Both terms refer to the same concept of waiting in hiding to attack.