Wonderful to tolerate some stars (5,4)
I believe the answer is:
great bear
'some stars' is the definition.
(constellation Ursa Major)
'wonderful to tolerate' is the wordplay.
'wonderful' becomes 'great' (I've seen this before).
'to tolerate' becomes 'bear' (synonyms).
'great'+'bear'='GREAT BEAR'
(Other definitions for great bear that I've seen before include "Major stars" , "Ursa Major" , "'Large ursine in the heavens (5,4)'" , "star group" , "visible in the night sky" .)