so

adverb8

1. •
   to a very great degree, used to make the word that follows stronger

   • It was so hot outside that all the plants died.
   • He was so good, they hired him on the spot.
2. •
   To the (implied) extent.

   • I need a piece of cloth so long. [= this long]
3. •
   To such an extent or degree; as.
4. •
   Very (positive or negative clause).

   • I feel so much better now.
   • I so nearly lost my temper.
5. •
   Very much.

   • But I so want to see the Queen when she visits our town!
6. •
   (informal) at all (negative clause).

   • That is so not true!
7. •
   In the same manner or to the same extent as aforementioned; likewise, also.

   • As above, so below.
   • Just as you have the right to your free speech, so I have the right to mine.
8. •
   Indeed.

   • ‘Look, it’s just stopped raining.’ ‘So it has!’
   • ‘There are two more.’ ‘So there are.’

conjunction5

1. •
   As a result; for that reason; therefore; because of this; due to this.

   • I was hungry, so I asked if there was any more food.
   • He ate too much cake and so he fell ill.
2. •
   Reduced form of 'so that', used to express purpose; in order that.

   • I got an earlier train to work so I'd have plenty of time to prepare for the meeting.
   • Eat your broccoli so you can have dessert.
3. •
   Used to connect previous conversation or events to the following question.

   • So how does this story end?
4. •
   Used to introduce a rhetorical question.

   • “We'd like to visit but I don't know if we can afford a hotel.” — “So who's staying in a hotel? Stay with us.”
5. •
   (no longer used) Provided that; on condition that; as long as.

   • Speed. ‘Item: She doth talk in her sleep.’ Launce. It’s no matter for that, so she sleep not in her talk. — 1590

exclamation4

1. •
   Used after a pause for thought to introduce a new topic, question or story, or a new thought or question in continuation of an existing topic.

   • So, let's go home.
   • So, what'll you have?
2. •
   Used as a meaningless filler word to begin a response to a question.

   • What are you doing? / So I'm just fixing this shelf.
   • What time does the train leave? / So it leaves at 10 o'clock.
3. •
   Used as a question to ask for further explanation of something said, often rhetorically or in a dismissive or impolite manner.

   • "You park your car in front of my house every morning." — "So?"
4. •
   (no longer used) Be as you are; stand still; used especially to cows; also used by sailors.

adjective3

1. •
   Agreeing with actual facts or reality; true.

   • That is so.
   • You are responsible for this, is that not so?
2. •
   In that state or manner; with that attribute. A proadjective that replaces the aforementioned adjective phrase.

   • "You're definitely not right about that." "I am so!" (→I am right about that).
3. •
   (slang, old-fashioned) Homosexual.

   • Is he so?

noun3

1. •
   A syllable used in solfège to represent the fifth note of a major scale.
2. •
   Sometimes syllable for both the second and the fifth.
3. •
   A type of dairy product, made especially in Japan between the seventh and tenth centuries, by reducing milk by boiling it.

pronoun2

1. •
   That which was previously mentioned; that.

   • I'll become a loyal friend and remain so.
   • If that's what you really mean, then just say so.
2. •
   Abbreviation of someone.

pronoun1

1. •
   Abbreviation of someone.

noun8

1. •
   Initialism of significant other.
2. •
   Initialism of strike out.
3. •
   Initialism of shut out.
4. •
   Initialism of shootout.
5. •
   Abbreviation of standing order.
6. •
   Initialism of symphony orchestra.
7. •
   Initialism of second-order logic.
8. •
   Abbreviation of singlet oxygen.

pronoun1

1. •
   Initialism of someone.

adjective1

1. •
   Abbreviation of southern.

noun1

1. •
   Abbreviation of south.

noun[plural only]1

1. •
   A Mon-Khmer-speaking people of Laos and Thailand.