The phrase "lam into" is often used to describe a situation where a person is attacking or berating another. There are a number of synonyms that can be used to convey the same meaning, including "lay into," "blow up at," "rip into," and "go off on." Other options include "rant at," "chew out," "rebuke," "scold," and "reprimand." All of these synonyms convey a sense of anger or frustration on the part of the speaker, and suggest a confrontational interaction of some kind. Whether used in a personal or professional context, these words can be used to express intense emotions and make a strong impression on the listener.