When speaking, writing, or reading, you are likely to have come across the term "water something down." This phrase refers to the act of diluting or weakening something's strength or effectiveness. When you "water something down," you are not presenting it in its complete or undiluted form. Some antonyms for "water something down" include intensify, concentrate, reinforce, fortify, strengthen, firm up, and stiffen. These words connote a sense of making something more powerful and effective rather than reducing its efficacy. Therefore, using these antonyms can help convey a sense of purpose and power in communication, emphasizing the importance of strong, unadulterated messages.