State modelled over passion (8)
I believe the answer is:
tasmania
'state' is the definition.
(Tasmania is an example)
'modelled over passion' is the wordplay.
'modelled' becomes 'sat' ('sit' can be a synonym of 'model').
'over' is a reversal indicator.
'passion' becomes 'mania' (synonyms).
'sat' in reverse letter order is 'tas'.
'tas'+'mania'='TASMANIA'
(Other definitions for tasmania that I've seen before include "Van Diemen's Land" , "State off 23 [VICTORIA]" , "mountainous island" , "Asian ATM in Australian federation" , "Aussie's state" .)