"It was so hot outside that all the plants died. He was so good, they hired him on the spot."
2.adverbTo the (implied) extent.
"I need a piece of cloth so long. [= this long]"
3.adverbIn a particular manner.
"Place the napkin on the table just so. If that's what you mean, then say so; (or do so)."
4.adverbIn the same manner or to the same extent as aforementioned; also.
"Just as you have the right to your free speech, so I have the right to mine. Many people say she's the world's greatest athlete, but I don't think so. "I can count backwards from one hundred." "So can I.""
5.adverbWith as To such an extent or degree; as.
"so far as; so long as; so much as"
6.adverb(modal adverb) Without doubt, certainly.
""Did you kill that bear yourself?" ―"I sure did!""