in the dust
1. Far behind someone or something else. With the new modifications to our car's engine, we were able to leave the other racers in the dust.
2. Completely outclassed, outperformed, or surpassed. There is no question that their latest smartphone leaves every other model on the market in the dust. The up-and-coming basketball star has been leaving his peers in the dust.
in the dust
Far behind, as in a race or competition: a marketing strategy that left our competitors in the dust.