Father avoiding wild prank (5)
I believe the answer is:
antic
'prank' is the definition.
(I know that prank can be written as antic)
'father avoiding wild' is the wordplay.
'father' becomes 'fr' (abbreviation as in a priest's title).
'avoiding' is a deletion indicator.
'wild' becomes 'frantic' (similar in meaning).
'frantic' with 'fr' removed is 'ANTIC'.
(Other definitions for antic that I've seen before include "Ludicrous act done for fun" , "Grotesque, fantastic (archaic)" , "old buffoon" , "Eccentric once" , "Absurd action" .)