to pretend or feign

りをする(きどる) To pretend (that you’re rich, that you don’t know who ate the fucking last piece of pie, that you’re a real hard-core gangsta, etc.)
(よそおう) To pose (as a teenager online) , to masquerade (as a human even though you are a vampire). But also includes ふり’s meaning of to pretend (to be happy or whatever). Basically, 装う means you’re trying to dupe other people intentionally, but 振りをする means you’re fooling your own self.
ける(とぼける) To feign innocence. (Although, it’s more common to simply say, 何も知らないを振りするな!!!)