Item of clothing unconventional male displayed in a manner of speaking (12)
I believe the answer is:
accoutrement
'item of clothing' is the definition.
'accoutrement' can be an answer for 'clothing' (accoutrement is a kind of clothing). I'm not sure about the 'item of' bit.
'unconventional male displayed in a manner of speaking' is the wordplay.
'unconventional' becomes 'outre' (similar in meaning).
'male' becomes 'm' (common abbreviation).
'displayed in' is an insertion indicator.
'a manner of speaking' becomes 'accent' (accent is a kind of manner of speaking).
'outre'+'m'='outrem'
'outrem' going inside 'accent' is 'ACCOUTREMENT'.
Can you help me to learn more?
(Other definitions for accoutrement that I've seen before include "Kit" , "clothing" , "Article of equipment" , "Items of dress/equipment required for an activity" , "outfit" .)