Robed (7)
(Other definitions for attired that I've seen before include "Wearing clothes" , "Dressed or clothed" , "Turned out" , "got up" , "surrounded by duds" .)
'robed' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for clothed that I've seen before include "Dressed" , "Wearing attire" , "Clad" , "Attired" , "Wrapped" .)