yǐ​jiǎ​luàn​zhēn

to pass off a fake as genuine

以假乱真 以假亂真 yǐ​jiǎ​luàn​zhēn
to pass off a fake as genuine
(idiom) to mix the fake with the genuine; to blur the line between fake and real so convincingly that the fake is mistaken for the real thing; to pass off a sham as genuine

Frequency

Movie subtitles
0.360 per million appears in 0% of films
Written text
0.765 per million

Sources