Grave, resting place for listener? (7)
I believe the answer is:
earnest
'grave' is the definition.
(I've seen this before)
'resting place for listener?' is the wordplay.
'resting place' becomes 'nest' (I've seen this in another clue).
'for' means one lot of letters go next to another (I've seen this in other clues).
'listener?' becomes 'ear' (body part which hears or listens).
'nest' after 'ear' is 'EARNEST'.
(Other definitions for earnest that I've seen before include "Serious in intention" , "Seriously eager" , "Serious-minded" , "Determined - heartfelt" , "Intensely serious; token" .)