Double act being wordless awkwardly hampers emotion (9,5)
I believe the answer is:
pantomime horse
'double act being wordless' is the definition.
(horse suit worn by two people)
'awkwardly hampers emotion' is the wordplay.
'awkwardly' is an anagram indicator.
'hampers'+'emotion'='hampersemotion'
'hampersemotion' anagrammed gives 'PANTOMIME HORSE'.
(Other definitions for pantomime horse that I've seen before include "Christmas show character" , "Costume for two performers" , "Christmas double act" .)