Working women tend to show natural ability (9)
I believe the answer is:
endowment
'natural ability' is the definition.
(endowment is a kind of natural ability)
'working women tend' is the wordplay.
'working' indicates anagramming the letters.
'women'+'tend'='womentend'
'womentend' anagrammed gives 'ENDOWMENT'.
'to show' is the link.
(Other definitions for endowment that I've seen before include "Contract" , "Personal quality - type of mortgage" , "Bequeathed income" , "Natural talent -- won't emend (anag)" , "Grant" .)