Familiar with (4,2)

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4,2

used to

wise to

'familiar with' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for used to that I've seen before include "Did at times in the past" , "Familiar with" , "Was in the habit" , "Not unfamiliar with" , "Accustomed or inured" .)

I've seen this clue in The New York Times, The Irish Times, The Wall Street Journal, the King Feature Syndicate and the USA Today.

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