Shrewd publication is a buzzkill? (8)
I believe the answer is:
flypaper
'a buzzkill?' is the definition.
I can't tell whether this defines the answer.
'shrewd publication' is the wordplay.
'shrewd' becomes 'fly' (fly can mean shrewd or astute).
'publication' becomes 'paper' (a paper is a type of publication).
'fly'+'paper'='FLYPAPER'
'is' acts as a link.
Can you help me to learn more?
(Other definitions for flypaper that I've seen before include "Sticky insect trap" , "one collecting insects" , "Bluebottle catcher" , "Sticky trap for bluebottles etc" , "Killer" .)