Had meal following end of office work in the US? Fancy! (9)
I believe the answer is:
elaborate
'fancy' is the definition.
(similar in meaning)
'had meal following end of office work in the us?' is the wordplay.
'had meal' becomes 'ate' (to have a meal is to eat).
'following' means one lot of letters go next to another.
'end of' indicates one should take the final letters.
'work in the us?' becomes 'labor' (US spelling of 'labour').
The last letter of 'office' is 'e'.
'e'+'labor'='elabor'
'ate' put after 'elabor' is 'ELABORATE'.
(Other definitions for elaborate that I've seen before include "involved" , "with added detail" , "flesh out?" , "Highly detailed" , "Polish" .)