Coarse youth leader going to ground (6)
I believe the answer is:
earthy
'coarse' is the definition.
('earthy' can be a synonym of 'coarse')
'youth leader going to ground' is the wordplay.
'youth leader' becomes 'y' (I've seen this in other clues).
'going to' says to put letters next to each other.
'ground' becomes 'earth' ('earth' can be a synonym of 'ground').
'y' put after 'earth' is 'EARTHY'.
(Other definitions for earthy that I've seen before include "grubby" , "Gross, like the soil" , "Coarse; unsophisticated" , "Coarse, vulgar" , "Crude - vulgar" .)