Crossword Genius

Tree support, we hear, approved (6)

Ross

I believe the answer is:

okayed

'approved' is the definition.
('okay' can be a synonym of 'approve')

I can't explain the remainder of the clue.

(Other definitions for okayed that I've seen before include "given thumbs up" , "Gave informal approval" , "Allowed" , "Sanctioned" , "Authorised" .)

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