Pretty female attending family celebration (4,2)
I believe the answer is:
kind of
'pretty' is the definition.
(thesaurus)
'female attending family celebration' is the wordplay.
'female' becomes 'f' (common abbreviation).
'attending' is a charade indicator (letters next to each other) (to attend can mean to follow).
'family' becomes 'kin' (synonyms).
'celebration' becomes 'do' (I've seen this in other clues).
'kin'+'do'='kindo'
'f' after 'kindo' is 'KIND OF'.
(Other definitions for kind of that I've seen before include "Rather" , "Somewhat" , "After a fashion" , "Not exactly" .)