Theatre in Spain to feel discontented (6)
I believe the answer is:
repine
'feel discontented' is the definition.
I can't judge whether this definition defines the answer.
'theatre in spain' is the wordplay.
'theatre' becomes 'rep' (I've seen this in other clues).
'spain' becomes 'e' (abbreviation for Espana).
'rep'+'in'+'e'='REPINE'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for repine that I've seen before include "Be in a state of anxiety" , "Fret, about a tree perhaps?" , "Fret, be discontented" , "Express discontent, fret" , "Plain" .)