View tear-jerker about end of Philip I (7)
I believe the answer is:
opinion
'view' is the definition.
(synonyms)
'tear-jerker about end of philip i' is the wordplay.
'tear jerker' becomes 'onion' (cutting onions can make you cry).
'about' is an insertion indicator.
'end of' indicates one should take the final letters.
The last letter of 'philip' is 'p'.
'p'+'i'='pi'
'onion' enclosing 'pi' is 'OPINION'.
(Other definitions for opinion that I've seen before include "thinking" , "Viewpoint" , "A view held as probable - well, that's mine" , "Estimation" , "Conviction - point of view" .)