Fancy man learnt strangely love comes first (10)
I believe the answer is:
ornamental
'fancy' is the definition.
(thesaurus)
'man learnt strangely love comes first' is the wordplay.
'strangely' indicates anagramming the letters.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'comes first' says to put letters next to each other.
'man'+'learnt'='manlearnt'
'manlearnt' anagrammed gives 'rnamental'.
'rnamental' after 'o' is 'ORNAMENTAL'.
(Other definitions for ornamental that I've seen before include "non-functional" , "showy" , "Fancy" , "Plant grown for attractive appearance" , "Decorative" .)