Chewing out is a colloquial term used to describe a severe reprimand or verbal scolding. However, if you wish to avoid using it, you can use a variety of synonyms to express the same sentiment. Words like berating, rebuking, admonishing, dressing down, tongue-lashing and casting a reprehending may be used in place of chewing out. These words all refer to a severe verbal reprimand. By using synonyms, you can diversify your language and avoid repetition. It is important to remember that these words should only be used in appropriate situations where a strong admonishment is called for.