Pathetic threesome, agreed hosts (6)
I believe the answer is:
meagre
'pathetic' is the definition.
(thesaurus)
'threesome agreed hosts' is the wordplay.
'hosts' indicates a hidden word.
'MEAGRE' can be found hidden inside 'threesome agreed'.
(Other definitions for meagre that I've seen before include "Thin on the ground, scarce" , "Thin or scanty" , "Scanty, not plentiful" , "Miserable" , "Inadequate, scanty" .)