In clothes worn by archaeologist, but only outside (7)
I believe the answer is:
attired
'archaeologist but only outside' is the definition.
I can't judge whether this defines the answer.
'in clothes worn by' is the wordplay.
'in clothes' becomes 'at' (I can't explain this - if you can you should give a lot more credence to this answer).
'worn' becomes 'tired' ('tire' can be a synonym of 'wear').
'by' says to put letters next to each other.
'at'+'tired'='ATTIRED'
Can you help me to learn more?
(Other definitions for attired that I've seen before include "Turned out" , "Wearing clothes" , "Dressed or clothed" , "surrounded by duds" , "got up" .)