Stylish glee spread by worker (7)
I believe the answer is:
elegant
'stylish' is the definition.
(both can mean fancy or ornate)
'glee spread by worker' is the wordplay.
'spread' indicates an anagram.
'by' says to put letters next to each other.
'worker' becomes 'ant' (worker is a type of ant).
'glee' with letters rearranged gives 'eleg'.
'eleg'+'ant'='ELEGANT'
(Other definitions for elegant that I've seen before include "Refined gracefulness" , "Gracefully stylish" , "Well-turned" , "excellent!" , "Dignified and graceful" .)