The phrase "passing by" refers to moving past a particular location or person without stopping or lingering. There are a variety of synonyms for this term, including: walking past, drifting by, breezing past, going past, moving along, cruising by, gliding past, and skimming by. Other similar phrases might include phrases like "traveling through," "passing through," or "moving onward," all of which evoke a sense of forward motion and progression. Whether you are simply walking down the street or driving through a new neighborhood, there are plenty of ways to describe the act of passing by without stopping to engage with the people or places around you.