Bug Irish judge hosting Italian (8)
I believe the answer is:
irritate
'bug' is the definition.
(I've seen this in another clue)
'irish judge hosting italian' is the wordplay.
'irish' becomes 'IR' (abbreviation).
'judge' becomes 'rate' (rating is a kind of judging).
'hosting' is an insertion indicator (inserted letters are welcomed in or hosted).
'italian' becomes 'it' (abbreviation for Italian).
'rate' going around 'it' is 'ritate'.
'ir'+'ritate'='IRRITATE'
(Other definitions for irritate that I've seen before include "Annoy or cause itching" , "Provoke" , "Nettle and annoy" , "Chafe, annoy" , "Needle" .)