1. third person singular present indicative reflexive form of dissimular; to hide or conceal one's true feelings, intentions, or knowledge
One dissimulates their true feelings in polite company.
Dissimula-se o verdadeiro sentimento em companhia educada.
2. to pretend; to feign or act as if something is not the case
She dissimulates her displeasure with a smile.
Dissimula-se a contrariedade com um sorriso.