REALLY WALLOPS' The term 'REALLY WALLOPS' is an idiom that means to have a powerful or overwhelming effect. It can be used to describe a situation, an event, or a person's reaction. The crossword solution for this term is 'PLASTERS', which is another way of saying to cover something with a thick layer of material, usually for protection or decoration. This phrase is often used in the context of repairing walls or other surfaces.