Popular period at home with expert is boring (12)
I believe the answer is:
interminable
'boring' is the definition.
Both the answer and definition are adjectives. Perhaps they are linked in a way I don't understand?
'popular period at home with expert' is the wordplay.
'popular' becomes 'in' ('in' can mean trendy).
'period' becomes 'term' (term is a kind of period).
'at home' becomes 'in' ('I'm in' can mean 'I'm at home').
'with' says to put letters next to each other.
'expert' becomes 'able' (able can mean expert or talented).
'in'+'term'+'in'+'able'='INTERMINABLE'
'is' is the link.
Can you help me to learn more?
(Other definitions for interminable that I've seen before include "Unending" , "Tedious" , "Seeming likely to go on for ever" , "Without end" , "Long drawn-out" .)