Meditate moodily on family (5)
I believe the answer is:
brood
I believe this clue is a double definition.
'meditate moodily' is the first definition.
(I've seen this before)
'family' is the second definition.
(thesaurus)
'on' acts as a link.
(Other definitions for brood that I've seen before include "Think resentfully about family of children?" , "Offspring" , "Worry over" , "Think anxiously for some time" , "Meditate moodily" .)