People reportedly unable to speak freely, Nijinsky among others (9)
I believe the answer is:
racehorse
'nijinsky among others' is the definition.
(Nijinsky was a racehorse)
'people reportedly unable to speak freely' is the wordplay.
'people' becomes 'race' (people can mean a national group or race).
'reportedly' shows a homophone (sound like).
'unable to speak freely' becomes 'hoarse' (with a sore throat).
'hoarse' is a homophone of 'horse'.
'race'+'horse'='RACEHORSE'
(Other definitions for racehorse that I've seen before include "hope for better?" , "Arab possibly" , "Animal" , "jumper?" , "Steeplechaser, maybe" .)