Oral affliction? His is a lot, unfortunately (9)
I believe the answer is:
halitosis
'oral affliction?' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'his is a lot unfortunately' is the wordplay.
'unfortunately' indicates an anagram (a bad or unfortunate spelling).
'his'+'is'+'a'+'lot'='hisisalot'
'hisisalot' anagrammed gives 'HALITOSIS'.
Can you help me to learn more?
(Other definitions for halitosis that I've seen before include "Bad breath, smells unpleasant" , "repulsive pants?" , "Smelly breath" , "offensive condition" , "Foul breath problem" .)