Crossword Genius

Fellow feeling yen to pursue quarry (4)

Ross

I believe the answer is:

pity

'fellow feeling' is the definition.
(pity is a kind of fellow feeling)

'yen to pursue quarry' is the wordplay.
'yen' becomes 'y'.
'to pursue' says to put letters next to each other.
'quarry' becomes 'pit' ('pit' can be a synonym of 'quarry').
'y' put after 'pit' is 'PITY'.

(Other definitions for pity that I've seen before include "Sympathy for the suffering of another" , "Sorrow, compassion" , "Cause for regret" , "Feel sorrow for" , "Mercy" .)

I've seen this clue in The Times.
Want a hint initially instead of a full solution? Install my app