When we become engrossed in something, we are completely absorbed and focused on it. There are several synonyms that can be used in place of "become engrossed," including "immerse," "absorb," "dive into," and "lose oneself in." These words all convey an intense level of involvement and concentration on a particular activity, idea, or topic. Other synonyms for "become engrossed" include "captivate," "enamor," "fascinate," "enchant," and "captivate." No matter which synonym you choose, the underlying message is the same - when we become engrossed, we are fully invested in the task at hand.