Amusing to be around a pastoral deity (4)
I believe the answer is:
faun
'pastoral deity' is the definition.
(half-goat, half-man in classical mythology)
'amusing to be around a' is the wordplay.
'amusing' becomes 'fun' (synonyms).
'to be around' indicates putting letters inside.
'fun' going around 'a' is 'FAUN'.
(Other definitions for faun that I've seen before include "This old deity" , "Ancient Italian deity with goat-like features" , "Rural deity, half-man, half-goat" , "Deity in human shape, with horns and a goat's tail" , "Roman deity, in the form of a man with a goat's horns, legs and tail" .)