Attempt to include a garment as disguise (8)
I believe the answer is:
travesty
'disguise' is the definition.
(thesaurus)
'attempt to include a garment' is the wordplay.
'attempt to' becomes 'try' (I've seen this in other clues).
'include' indicates putting letters inside.
'garment' becomes 'vest' (vest is a type of garment or item of clothing).
'a'+'vest'='avest'
'try' placed around 'avest' is 'TRAVESTY'.
'as' acts as a link.
(Other definitions for travesty that I've seen before include "Grotesque parody" , "Burlesque, parody" , "Take off" , "Charade" , "Grossly unfair representation" .)