n.

1. the syllable naming the fifth (dominant) note of any musical scale in solmization;
   sol, soh

adv.

1. to a very great extent or degree
   
   • the idea is so obvious
   • never been so happy
   • I love you so
   • my head aches so!
2. in a manner that facilitates
   
   • he observed the snakes so he could describe their behavior
   • he stooped down so he could pick up his hat
3. in such a condition or manner, especially as expressed or implied
   
   • They're happy and I hope they will remain so
   • so live your life that old age will bring no regrets
4. to a certain unspecified extent or degree
   
   • I can only go so far with this student
   • can do only so much in a day
5. in the same way; also
   
   • I was offended and so was he
   • worked hard and so did she
6. in the way indicated; "hold the brush so"; "set up the pieces thus"; (`thusly' is a nonstandard variant);
   thus, thusly
7. (usually followed by `that') to an extent or degree as expressed
   
   • he was so tired he could hardly stand
   • so dirty that it smells
8. subsequently or soon afterward (often used as sentence connectors);
   then, and so, and then
   
   • then he left
   • go left first, then right
   • first came lightning, then thunder
   • we watched the late movie and then went to bed
   • and so home and to bed
9. in truth (often tends to intensify);
   indeed
   
   • they said the car would break down and indeed it did
   • it is very cold indeed
   • was indeed grateful
   • indeed, the rain may still come
   • he did so do it!