Cheerful judge I found in cricket venue (6)
I believe the answer is:
jovial
'cheerful' is the definition.
(I've seen this before)
'judge i found in cricket venue' is the wordplay.
'judge' becomes 'J' (abbreviation for judge).
'found in' indicates putting letters inside.
'cricket venue' becomes 'oval' (I've seen this in another clue).
'i' inserted inside 'oval' is 'ovial'.
'j'+'ovial'='JOVIAL'
(Other definitions for jovial that I've seen before include "Jolly, good-humoured" , "Genial, joyous" , "Happy and cheerful" , "Cheerful, lively" , "Full of mirth" .)