De-escalate, which means to decrease or lessen the intensity of something, also has its antonyms. Antonyms are words that have the opposite meaning of a given word. The antonyms for de-escalate are escalate, intensify, heighten, increase, worsen, and inflame. To escalate means to increase or intensify rapidly, while to intensify means to make something more intense or stronger. On the other hand, to heighten means to increase the intensity of something, and to worsen means to make something worse or more severe. Lastly, to inflame means to aggravate or arouse strong emotions or reactions. Thus, these antonyms show the opposite direction that de-escalation takes.