Angry maybe, but akin to being kind (3)

I believe the answer is:

red

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'angry' is the definition.
(I've seen this in other clues)

I cannot understand how the rest of the clue works.

(Other definitions for red that I've seen before include "- Cross; - carpet" , "Scarlet or vermilion" , "Flushed" , "- Cross; - admiral" , "Colour of 1 across" .)

I've seen this clue in the Evening Standard.

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