In art, there's room to be passionate (6)
I believe the answer is:
ardent
'be passionate' is the definition.
(similar in meaning)
'in art there's room' is the wordplay.
'in' means one lot of letters goes inside another.
'there's room' becomes 'den' (I can't justify this - if you can you should believe this answer much more).
'art' placed around 'den' is 'ARDENT'.
'to' is the link.
Can you help me to learn more?
(Other definitions for ardent that I've seen before include "Very keen" , "Warm and loving" , "Hot" , "Passionate and glowing" , "Burning with emotion" .)