misfeign
/mɪsˈfeɪn/Definitions
1. verb
to pretend or feign something in a way that is likely to be discovered as false
“She tried to misfeign a smile, but it was clear she was unhappy.”
2. noun
an instance of pretending or feigning something in a way that is likely to be discovered as false
“His misfeign was discovered by his sister, who confronted him about it.”