Ambiguate means to make something unclear or ambiguous. Antonyms for this word include clarify, specify, elucidate, explain, emphasize, explicate, illustrate, simplify, and unveil. These words are used to indicate an activity that involves making something clear, unambiguous or explicit. For instance, if someone has given vague directions or instructions, they need to be clarified so that they can be easily understood. Similarly, when presenting an argument or idea, it is important to explicate it in a clear and concise manner, so that the audience can easily comprehend and follow along. In summary, antonyms for ambiguate are words that denote clarity, transparency, and precision in expression.