Reward staggering, but no end to poverty (6)
I believe the answer is:
bounty
'reward' is the definition.
(bounty is a kind of reward)
'staggering but no end to poverty' is the wordplay.
'staggering' indicates an anagram (I've seen this in other clues).
'end to' says to take the final letters.
The last letter of 'poverty' is 'y'.
'but'+'no'='butno'
'butno' is an anagram of 'bount'.
'bount'+'y'='BOUNTY'
(Other definitions for bounty that I've seen before include "Reward on head of criminal" , "Generosity in giving - or mutinous ship" , "commanded by William Bligh?" , "Christian took responsibility for this" , "The price on one's head?" .)