Proverb from road agent (5)

I believe the answer is:

adage

'proverb' is the definition.
(synonyms)

'from road agent' is the wordplay.
'from' says the answer is hidden in the clue.
'ADAGE' is hidden within 'road agent'.

(Other definitions for adage that I've seen before include "Old saying, maxim" , "Saw, proverb" , "Wise old saying" , "Maxim, aphorism" , "Axiom" .)

I've seen this clue in The Sun.

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