Crossword Genius

Freezing shrew's confession may be heard (3-4)

Ross

I believe the answer is:

ice-cold

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

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for ice-cold that I've seen before include ". . . . . . . in Alex (film)" , "Frozen" , "Chilled" , "Freezing" , "Straight from the freezer" .)

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