so (Noun) — The syllable naming the fifth (dominant) note of any musical scale in solmization.
so (Adverb) — To a very great extent or degree. ex. "the idea is so obvious" ex. "never been so happy" ex. "I love you so" ex. "my head aches so!"
so (Adverb) — In a manner that facilitates. ex. "he observed the snakes so he could describe their behaviour" ex. "he stooped down so he could pick up his hat"
so (Adverb) — In such a condition or manner, especially as expressed or implied. ex. "They're happy and I hope they will remain so" ex. "so live your life that old age will bring no regrets"
so (Adverb) — To a certain unspecified extent or degree. ex. "I can only go so far with this student" ex. "can do only so much in a day"
so (Adverb) — In the same way; also. ex. "I was offended and so was he" ex. "worked hard and so did she"
so (Adverb) — In the way indicated. ex. "hold the brush so"
so (Adverb) — (usually followed by 'that') to an extent or degree as expressed. ex. "he was so tired he could hardly stand" ex. "so dirty that it smells"
so (Adverb) — Subsequently or soon afterwards (often used as a sentence connector). ex. "and so home and to bed"
so (Adverb) — (used to introduce a logical conclusion) from that fact, reason or as a result. ex. "the witness is biased and so cannot be trusted"
so (Adverb) — In truth (often tends to intensify). ex. "he did so do it!"
so (Conjunction) — And for this reason. ex. "You are too nice, and so tend to be exploited"
so (Conjunction) — In order that. ex. "run so you get there quickly"
so (Conjunction) — With the result that. ex. "it is sunny, so it will be hot"