Permit - strange to relate (8)
I believe the answer is:
'permit' is the definition.
(I know that permit can be written as tolerate)
'strange to relate' is the wordplay.
'strange' indicates an anagram.
'torelate' is an anagram of 'TOLERATE'.
(Other definitions for tolerate that I've seen before include "Stomach" , "Be indulgent" , "Family relative" , "Abide" , "Treat fairly" .)