Stick around southern island, getting hot (10)
I believe the answer is:
passionate
'hot' is the definition.
(associated in meaning)
'stick around southern island getting' is the wordplay.
'stick' becomes 'paste' (as in sticking or pasting something down).
'around' is an insertion indicator.
'southern' becomes 's' (abbreviation).
'island getting' becomes 'iona' (I am not sure about this - if you are sure you should believe this answer much more).
's'+'iona'='siona'
'paste' enclosing 'siona' is 'PASSIONATE'.
Can you help me to learn more?
(Other definitions for passionate that I've seen before include "Burning" , "Ardent" , "Easily moved" , "Showing strong emotions" , "Showing intense feeling" .)