Unusually deep loving evolving (10)

I believe the answer is:

developing

'evolving' is the definition.
('develop' can be a synonym of 'evolve')

'unusually deep loving' is the wordplay.
'unusually' is an anagram indicator.
'deep'+'loving'='deeploving'
'deeploving' anagrammed gives 'DEVELOPING'.

(Another definition for developing that I've seen is " Converting (open land) to buildings".)

I've seen this clue in The Telegraph.

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.