The term "ream out" is an idiomatic expression used to indicate a situation where one is admonishing or warning someone for their mistakes or misconduct. Synonyms for "ream out" include rebuke, reproach, scold, berate, reprimand, admonish, and criticize. These actions are usually done in response to negative behaviors that are not tolerated, such as showing disrespect, unprofessionalism, or being unproductive. The use of these synonyms shows the level of disappointment or displeasure that the authority figure may have with the individual's actions. Each word has a slightly different meaning depending on the context and the severity of the situation, but they all convey a sense of correction that is necessary for improvement.