All in favour of turning right (3)

I believe the answer is:

for

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

'all in favour' is the definition.
The definition suggests a singular noun which matches the answer.

'of turning right' is the wordplay.
'turning' says the letters should be written in reverse.
'right' becomes 'r' (common abbreviation).
'of' back-to-front is 'fo'.
'fo'+'r'='FOR'

Can you help me to learn more?

(Other definitions for for that I've seen before include "Approving" , "and 16 and 20: Notwithstanding" , "On the side of" , "In support of" , "See 24" .)

I've seen this clue in the Evening Standard.

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.