Best spreadsheet? (5)
I believe the answer is:
excel
'best' is the definition.
(thesaurus)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for excel that I've seen before include "Surpass; shine" , "Do superbly well" , "Perform extremely well" , "Do really well as at exams" , "Be outstanding" .)