Having an excellent figure will help (3)
I believe the answer is:
aid
'help' is the definition.
(synonyms)
'having an excellent figure' is the wordplay.
I cannot quite see how this works, but
'an' could be 'i' (Roman numeral for one) and 'i' is found in the answer.
The remaining letters 'ad' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'will' is the link.
Can you help me to learn more?
(Other definitions for aid that I've seen before include "Auxiliary" , "A hand" , "Help or support" , "Help. Assist" , "encouragement" .)