The multiplier effect is a term often used in economics and finance to describe the positive impact that an initial investment can have on a larger economy or industry. There are several synonyms that can be used to describe this phenomenon, including the ripple effect, the snowball effect, the domino effect, and the amplification effect. Each of these terms describes how a small action or investment can produce a larger positive impact over time. The multiplier effect is a powerful force that can stimulate growth and prosperity in a variety of different contexts, from small businesses to entire national economies.