The crossword solution for the term SMACKS INTO is RAMS, which is a four-letter word. Rams are large, horned mammals that are part of the Bovidae family, which includes antelopes, goats, and sheep. They are known for their strong heads and horns, which they use to charge into each other in order to establish dominance. This behavior is often referred to as 'ramming, ' which is where the term SMACKS INTO comes from.