Turn pale (6)

I believe the answer is:

bleach

'turn pale' is the definition.
(thesaurus)

This is the entire clue.

(Other definitions for bleach that I've seen before include "Clean" , "Purge" , "Make colourless" , "Sterilising whitener" , "Lighten" .)

I've seen this clue in The Globe and Mail.

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