Old fools in motley array (7)

I believe the answer is:

jesters

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'old fools' is the definition.
'jesters' can be an answer for 'fools' ('jester' can be a synonym of 'fool'). I'm not sure about the 'old' bit.

I can't explain the rest of the clue.

Can you help me to learn more?

(Another definition for jesters that I've seen is " Jokers".)

I've seen this clue in the Evening Standard.

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