Appropriate fur coats nudist regularly ignored (8)
I believe the answer is:
suitable
'appropriate' is the definition.
(similar in meaning)
'fur coats nudist regularly ignored' is the wordplay.
'fur' becomes 'sable' (sable is a kind of fur).
'coats' means one lot of letters goes inside another (inserted letters are coated in another word).
'regularly ignored' means one should take alternating letters (letters removed at regular intervals).
The alternating letters of 'nudist' are 'uit'.
'sable' enclosing 'uit' is 'SUITABLE'.
(Other definitions for suitable that I've seen before include "Convenient" , "Appropriate, apt" , "Fitting, apt" , "Right or appropriate" , "Satisfactory, worthy" .)