Antonyms for the word "underplayed" include words such as overacted, exaggerated, dramatized, overstated, hyperbolized, and amplified. These words refer to actions that are either exaggerated or overemphasized, thereby drawing disproportionate attention to them. When something is "underplayed," it is downplayed or toned down, whereas the antonyms suggest a heightened sense of drama or excitement. For example, an actor who overacts on stage is said to have "amplified" his or her performance, whereas someone who underplays their role might be criticized for not showing enough emotion. It's important to be mindful of these nuances in language, as they can impact how we interpret and communicate ideas.