Afraid no air's circulating in home (8)
I believe the answer is:
paranoid
'afraid' is the definition.
Both the answer and definition are adjectives. Perhaps there's a link between them I don't understand?
'no air's circulating in home' is the wordplay.
'circulating' indicates an anagram.
'in' indicates putting letters inside.
'home' becomes 'pad' (pad can mean someone's home).
'no'+'air'='noair'
'noair' with letters rearranged gives 'ranoi'.
'ranoi' going into 'pad' is 'PARANOID'.
Can you help me to learn more?
(Other definitions for paranoid that I've seen before include "Afflicted with delusions of persecution" , "Irrationally obsessed by fear etc" , "Excessively suspicious" , "one given to suspicion" , "Suffering delusions; road pain (anag.)" .)