Displeased, being infested? (5)
I believe the answer is:
ratty
This could be a double definition.
'displeased' is the first definition.
Both the answer and definition are adjectives. Perhaps they are linked in a way I don't understand?
'being infested?' is the second definition.
(thesaurus)
Can you help me to learn more?
(Other definitions for ratty that I've seen before include "Irritable, peevish" , "his friend being a dangerous driver" , "Get annoyed" , "Fictional mole's chum" , "with pests" .)