Pervading subject (5)
I believe the answer is:
theme
(Other definitions for theme that I've seen before include "sort of tune" , "[(type of) PARK]" , "Subject matter, topic" , "Burden" , "Recurring melody" .)
I believe the answer is:
theme
(Other definitions for theme that I've seen before include "sort of tune" , "[(type of) PARK]" , "Subject matter, topic" , "Burden" , "Recurring melody" .)