Found in florid, opinionated language (3)
I believe the answer is:
ido
'language' is the definition.
(I know that Ido is a type of artificial language)
'found in florid opinionated' is the wordplay.
'found in' says the answer is hidden in the clue.
'IDO' is hidden within 'florid opinionated'.
(Other definitions for ido that I've seen before include "See 1" , "Artificial language" , "a language? That's unnatural" , "International language" , "Wedding promise" .)