Print rude remark about unwelcome guest (8)
I believe the answer is:
intruder
'unwelcome guest' is the definition.
'print rude remark about' is the wordplay.
'about' says the answer is hidden in the clue.
'INTRUDER' can be found hidden inside 'print rude remark'.
(Other definitions for intruder that I've seen before include "Trespasser" , "Illegal entrant" , "Interloper" , "One making uninvited entry" , "Housebreaker" .)