Wise reportedly to include aristo in annual (6)

I believe the answer is:

yearly

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'annual' is the definition.
(I know that annual can be written as yearly)

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

Can you help me to learn more?

(Other definitions for yearly that I've seen before include "Happening every twelve months" , "Annually" , "At annual intervals" , "Perennial" , "like circulation of the Sun?" .)

I've seen this clue in The Sun.

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