Rare way of being done? (5)
I believe the answer is:
under
'being done?' is the definition.
Both the answer and definition are adjectives. Maybe you can see an association between them that I can't see?
'rare way' is the wordplay.
I cannot quite see how this works, but
'rare' could be 'r' (listed by Oxford Dictionary of Abbreviations) and 'r' is present in the answer.
'way' could be 'n' (Compass direction - North) and 'n' is present in the answer.
This explanation may well be incorrect...
'of' acts as a link.
Can you help me to learn more?
(Other definitions for under that I've seen before include "Subordinate to; planted with" , "Dylan Thomas radio play ''.... Milk Wood''" , "See 7" , "Dylan Thomas wrote '. . . . . Milk Wood'" , "Sub" .)