Fruit others eat regularly — ugli? (6)
I believe the answer is:
result
'fruit' is the definition.
(thesaurus)
'others eat regularly ugli?' is the wordplay.
'others' becomes 'rest' (I've seen this before).
'eat' is an insertion indicator.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
The alternate letters of 'ugli' are 'ul'.
'rest' enclosing 'ul' is 'RESULT'.
(Other definitions for result that I've seen before include "Effect - outcome" , "Effect of lustre" , "Final outcome" , "Verdict" , "Outcome of an undertaking" .)