Flair seen in ornate language (4)
I believe the answer is:
elan
'flair' is the definition.
(synonyms)
'in ornate language' is the wordplay.
'in' indicates a hidden word.
'ELAN' is hidden within 'ornate language'.
'seen' acts as a link.
(Other definitions for elan that I've seen before include "Grass with edible grains" , "Stylish enthusiasm" , "Vivacity, panache" , "Snap" , "Flair and dash" .)