to a very great degree or amount
I was so hungry that I ate two sandwiches in a row.
The movie was so funny that everyone in the theater burst out laughing.
✦ Old English "swa" meaning "in this way" or "to this extent," gradually evolving in Middle English to the modern form "so."
for that reason; therefore
It started to rain, so we went inside.
She forgot her keys, so I lent her mine.
used at the beginning of a sentence to introduce a new subject, question, or conclusion
So, how was your trip to Italy?
So, what do we do next?
in the way just shown or described
Hold the violin so, resting it on your left shoulder.
The puzzle pieces fit together so, forming a perfect square.
in order that something may happen
Speak loudly so everyone at the back can hear you.
I left early so I wouldn’t miss the train.
used to show you are not impressed or to ask what follows from something
“I have a new car.” “So? I’ve had mine for years.”
“The meeting is at 7 a.m.” “So?” she replied, clearly unimpressed.