SO

(THEREFORE) [conjunction] - and for that reason; thereforeI was getting tired so I came home.My knee started hurting so I stopped running.I was lost so I bought a street map.I couldn't find you so I left.He's in a very delicate state at the moment so you've got to be gentle with him.(informal humorous) So there! is used for emphasis, or to show that something is being done in opposition to someone else's wishes.Mine's bigger than yours, so there!No, I won't help you, so there!