Dis simulates, also known as dissimulate means to hide or conceal one's true thoughts or feelings. While the word primarily suggests behaving deceptively and pretending to be something else, its antonyms imply the opposite. To be honest, sincere, or straightforward are some of the antonyms for dissimulate. Speaking truthfully, transparently, or confessing are some of the ways in which one can opposite dissimulate. Moreover, displaying or showing true emotions or thoughts can also be a way to express oneself authentically. In conclusion, antonyms for dissimulate signify displaying a behavior that is honest, candid, and truthful.