Slight gasp aired in uproar (9)
I believe the answer is:
disparage
'slight' is the definition.
(I've seen this before)
'gasp aired in uproar' is the wordplay.
'in uproar' is an anagram indicator (I've seen this in other clues).
'gasp'+'aired'='gaspaired'
'gaspaired' anagrammed gives 'DISPARAGE'.
(Other definitions for disparage that I've seen before include "I grasped a change to belittle" , "Scorn" , "Belittled" , "Slight" , "Run down" .)