There are several synonyms for the phrase "ram into," which means to collide with something or someone at a high speed. One alternative is "crash into," which suggests a more forceful impact. Another option is "smash into," which implies a particularly violent collision. "Collide with" is a more general synonym that can describe any type of impact, while "hit" is a simpler and more informal choice. "Bump into" is a milder alternative that implies a less severe collision. Finally, "run into" is a common synonym that can describe a sudden and unexpected encounter with someone or something.