A way of approach that isn't welcomed? (6)
I believe the answer is:
inroad
'a way of approach that isn't welcomed?' is the definition.
'inroad' can be an answer for 'a way of approach'. I am not sure about the remainder of the definition.
'way of approach that isn't welcomed?' is the wordplay.
I cannot really see how this works, but
'way' could be 'road' (road is a kind of way) and 'road' is found within the answer.
The remaining letters 'in' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
(Other definitions for inroad that I've seen before include "Sudden attack made into a country" , "Encroachment; hostile attack" , "One's intrusive" , "Offensive" , "Ordain (anag.)" .)