Attempt to fool or deceive (3,2)

I think it could be either:

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3,2

try on

(Other definitions for try on that I've seen before include "attempt to sneak an advantage?" , "attempt to deceive" , "Check the fit of (a garment)" , "Test a garment's size and look" , "attempted deception" .)

I've seen this clue in The Guardian.

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