SO

adjective

1. True, accurate.
2. In that state or manner; with that attribute. A proadjective that replaces the aforementioned adjective phrase.
3. Homosexual.

adverb

1. To the (explicitly stated) extent that.
2. To the (implied) extent.
3. In a particular manner.

conjunction

1. In order that.
2. With the result that; for that reason; therefore.
3. Provided that; on condition that, as long as.