Plain element of personal life's been raised (5)
I believe the answer is:
llano
'plain' is the definition.
(thesaurus)
'element of personal life's been raised' is the wordplay.
'element of' indicates a hidden word (I've seen this in other clues).
'been raised' shows that the letters should be reversed in order.
'onall' can be found hidden inside 'personal lifes'.
'onall' backwards is 'LLANO'.
(Other definitions for llano that I've seen before include "Treeless grassy plain in South America" , "Grassy plain in South?America" , "Flat area" , "(South American) grassy plain" , "Treeless area" .)