Saunter around capital, flipping warm (7)
I believe the answer is:
amiable
'warm' is the definition.
(I've seen this in another clue)
'saunter around capital flipping' is the wordplay.
'saunter' becomes 'amble' (synonyms).
'around' is an insertion indicator.
'capital' becomes 'AI' (resembles Aa, which can mean capital or excellent).
'flipping' is a reversal indicator.
'ai' written backwards gives 'ia'.
'amble' enclosing 'ia' is 'AMIABLE'.
(Other definitions for amiable that I've seen before include "Of sweet and friendly disposition" , "'Cordial, friendly (7)'" , "Friendly and good-natured (7)" , "Lovable, friendly" , "'Friendly, pleasant and good-tempered (7)'" .)