Out-of-head member of your clan in high spirits (7)
I believe the answer is:
elation
'high spirits' is the definition.
(synonyms)
'out-of-head member of your clan in' is the wordplay.
I cannot quite see how this works, but
'of' could be 'o' and 'o' is found in the answer.
'in' is within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for elation that I've seen before include "State of pleasure about toe-nail" , "exhibits successful pride" , "Feeling of joy for it alone" , "Feeling of intense delight" , "Great happiness and exhilaration" .)