How do I stop 2 year old saying 'hate' ??

[DisenchantedPlusBump]

I hate you mummy,

i hate this

i hate scooby doo

EVERYTHING

I can't stand the word, i don't know what to do.

I tell him to stop, not a nice word, say don't like instead.

Nothing works.

IMO, the more you discourage, the more the darlings will say it. You could try swapping it with a made up word. Something funny, fluubydooby maybe?