Give support to a kind deed (6)

I believe the answer is:

favour

I'm a little stuck... Click here to teach me more about this clue!

'deed' is the definition.
(I know that favour is a type of benignity)

I can't explain the remainder of the clue.

(Other definitions for favour that I've seen before include "Act of goodwill" , "Good turn" , "Goodwill - support" , "Prefer - it's a kindness" , "Prefer one over the other" .)

I've seen this clue in The Globe and Mail.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.