Spotted memoir, essentially named One Broke Loose (7)

I believe the answer is:

mottled

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'spotted' is the definition.
(mottling is a kind of spotting)

I cannot understand how the rest of the clue works.

(Other definitions for mottled that I've seen before include "Marked with irregular patches of colour" , "Blotchy" , "Having blotches of colour" , "Marked with spots" , "Blotched" .)

I've seen this clue in the Sydney Morning Herald.

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