Latin poet showing promise (9)
I believe the answer is:
potential
'promise' is the definition.
(I've seen this before)
'latin poet' is the wordplay.
'latin poet' can be anagrammed to 'POTENTIAL'.
Though, I'm not clear how the anagram is indicated.
'showing' is the link.
Can you help me to learn more?
(Other definitions for potential that I've seen before include "Latent abilities that may be developed" , "Powerful" , "Capacity, ability to be developed" , "Budding" , "Likely, though not yet tested" .)