Being ardent, yearn to embrace a girl (6)
I believe the answer is:
loving
'being ardent' is the definition.
(thesaurus)
'yearn to embrace a girl' is the wordplay.
'yearn' becomes 'long-' (synonyms).
'to embrace' means one lot of letters goes inside another.
'a girl' becomes 'Vi' (short for Violet).
'long' placed around 'vi' is 'LOVING'.
(Other definitions for loving that I've seen before include "Affectionate and amorous" , "Doting" , "Showing great affection" , "See 13" , "'Friday's child is . . . . . . and giving'" .)