Points out some hate is simmering (5)
I believe the answer is:
stews
'hate is simmering' is the definition.
I can't judge whether this definition defines the answer.
'points out some' is the wordplay.
'points' becomes 'ss'.
'out' means one lot of letters goes inside another.
'some' becomes 'tew' (I can't justify this - if you can you should believe this answer much more).
'ss' going around 'tew' is 'STEWS'.
Can you help me to learn more?
(Other definitions for stews that I've seen before include "Ragouts" , "Swelters" , "Pickles" , "Dishes cooked by long simmering" , "casseroles?" .)