Definition of the word cut in

The phrase "cut in" has its roots in the dance culture of the 1920s and 1930s, specifically in the popular ballroom dance known as the "cutting contest." This competition involved couples dancing together in a large circle and periodically cutting in on each other's partners. The term "cutting" referred to the sudden break in the continuous flow of the dance, causing the active dancer to step aside and hand their partner over to another, more eligible dancer. The word "in" here signifies someone entering the dance or becoming a part of it. Over the years, the expression "cut in" has broadened its meaning beyond dance contexts, and now applies to situations in which someone enters or interrupts a scenario, especially one that was previously in progress. For example, in card games like bridge or poker, players may "cut in" to replace another player, or in business transactions, someone might "cut in" to take part in a profitable agreement. Thus, "cutting in" has become a versatile expression that signifies a sudden interruption or entry into a pre-existing event or situation.