dissembling

(noun) pretending with intention to deceive. Synonyms: pretense, pretence, feigning.

(noun) the act of deceiving. Synonyms: deception, deceit, dissimulation.

(verb) make believe with the intent to deceive. Synonyms: feign, sham, pretend, affect, dissemble. Examples: "He feigned that he was ill." "He shammed a headache."

(verb) hide under a false appearance. Synonyms: dissemble, cloak, mask. Example: "He masked his disappointment."

(verb) behave unnaturally or affectedly. Synonyms: dissemble, pretend, act. Example: "She's just acting."