Somewhat in clover at hers (6)
I believe the answer is:
rather
'somewhat' is the definition.
(I've seen this before)
'in clover at hers' is the wordplay.
'in' says the answer is hidden in the clue.
'RATHER' is hidden within 'clover at hers'.
(Other definitions for rather that I've seen before include "with more justification" , "More precisely; instead of" , "Yes, please!" , "Slightly, more so than not (6" , "On the contrary or to some extent" .)