Husband in sympathy, full of meaning (5)
I believe the answer is:
pithy
'full of meaning' is the definition.
(thesaurus)
'husband in sympathy' is the wordplay.
'husband' becomes 'h'.
'in' is an insertion indicator.
'sympathy' becomes 'pity' (pity is a kind of sympathy).
'h' put within 'pity' is 'PITHY'.
(Other definitions for pithy that I've seen before include "Short and sweet" , "Short and to the point" , "Brief, to the point" , "succinctly expressed" , "(Of language) terse, strongly expressive" .)