知ったか振りにの英語

crack wise

the quality of having an unconcerned air

Don't act like you know everything.

the action of pretending not to know someone or something

to be found out that you were pretending to know

He pretends not to know―makes believe that he does not know―feigns ignorance.

the act of intentionally pretending that one does not know

to pretend not to know

the degree to which one feigns ignorance

to pretend not to know something

to pretend to be an expert on a subject when one actually knows very little

the act of pretending not to know something

to feign on purpose

the profoundness of his ignorance

the manner of pretending to know nothing about the matter

to continue to pretend ignorance

pretending to know something despite having only a superficial knowledge of it

the act of pretending not to know