Dissimulation is a term used to describe the act of hiding or concealing one's true thoughts, emotions or motives. The word can also be referred to as deceitfulness, hypocrisy, or duplicity. Synonyms for it include masking, pretense, subterfuge, guile, artifice, deception, camouflage, dissembling, feigning, and insincerity. These words all describe the act of pretending to be someone or something that you are not, or concealing something from someone else. The synonyms for dissimulation can be useful in describing the actions of someone who is trying to deceive or manipulate others. Recognizing these tactics can help people identify when someone is not being honest.