Abbey not disheartened about short time inside (7)
I believe the answer is:
tintern
'abbey' is the definition.
(I've seen this before)
'not disheartened about short time inside' is the wordplay.
'not disheartened' becomes 'tern' (I can't justify this - if you can you should believe this answer much more).
'about' says to put letters next to each other.
'short time' becomes 't' (abbreviation; 'short' indicates a short form).
'inside' becomes 'in'.
't'+'in'='tin'
'tern' put after 'tin' is 'TINTERN'.
Can you help me to learn more?
(Other definitions for tintern that I've seen before include "Old abbey on the Wye" , "abbey that inspired Wordsworth" , "Famous Gwent abbey" , "Abbey made famous by Wordsworth" , "Monmouthshire abbey" .)