Crossword Genius

Prefix with lock or freeze (4)

Ross

I believe the answer is:

anti

'prefix with lock or freeze' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for anti that I've seen before include "Adversary" , "Policy's opponent" , "'No' voter" , "on the other side" , "Definitely not pro" .)

I've seen this clue in The New York Times.
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