East European still disheartened by Bible (4)
I believe the answer is:
slav
'east european' is the definition.
(I've seen this before)
'still disheartened by bible' is the wordplay.
'disheartened' means to remove the middle letters.
'by' says to put letters next to each other.
'bible' becomes 'av' (**).
'still' with its middle removed is 'sl'.
'sl'+'av'='SLAV'
(Other definitions for slav that I've seen before include "Eastern European" , "European perhaps" , "eg a Pole" , "A Russian, say" , "Native of eastern Europe or northwestern Asia" .)