Everyone in this novel is above average height (7)
I believe the answer is:
tallish
'everyone in this novel is above average height' is the definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?
'everyone in this novel' is the wordplay.
'everyone' becomes 'all' (all people).
'in' indicates putting letters inside.
'novel' is an anagram indicator (letters in a new or novel order).
'this' with letters rearranged gives 'tish'.
'all' put within 'tish' is 'TALLISH'.
Can you help me to learn more?
(Other definitions for tallish that I've seen before include "rather large" , "Consider" , "Rather lofty" .)