August, time to be disrobed and showing off (8)
I believe the answer is:
imposing
'august' is the definition.
(thesaurus)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for imposing that I've seen before include "Majestic" , "Impressive - or putting tax on" , "Dictating; impressive" , "Enormous - levying - striking" , "Impressive in appearance" .)