so¹ (sō)

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[Middle English, from Old English swā.]

adverb 

1. In the condition or manner expressed or indicated; thus: Hold the brush so.
2. To the amount or degree expressed or understood; to such an extent: She was so weary that she fell.
3. To a great extent; to such an evident degree: But the idea is so obvious.
4. Because of the reason given; consequently: She was weary and so fell.
5. Afterward; then: to the gas station and so home.
6. In the same way; likewise: You were on time and so was I.
7. Apparently; well, then. Used in expressing astonishment, disapproval, or sarcasm: So you think you've got troubles?
8. In truth; indeed: “You aren't right.” “I am so!”

adjective 

1. True; factual: I wouldn't have told you this if it weren't so.
2. In good order: Everything on his desk must be exactly so.

conj. 

1. With the result or consequence that: He failed to appear, so we went on without him.
2. In order that: I stayed so I could see you.

pron. 

Such as has already been suggested or specified; the same: She became a loyal friend and remained so.

interjection 

Used to express surprise or comprehension: So! You've finished your work at last.

idioms

so as to

In order to: Mail your package early so as to ensure its timely arrival.

so that

In order that: I stopped so that you could catch up. With the result or consequence that.

so what

Used to express contempt or lack of interest.

usage note

Usage Note: Many critics and grammarians have insisted that so must be followed by that in formal writing when used to introduce a clause giving the reason for or purpose of an action: He stayed so that he could see the second feature. But since many respected writers use so for so that in formal writing, it seems best to consider the issue one of stylistic preference: The store stays open late so (or so that ) people who work all day can buy groceries.  · Both so and so that are acceptably used to introduce clauses that state a result or consequence: The Bay Bridge was still closed, so (or so that ) the drive from San Francisco to the Berkeley campus took an hour and a half.  ·  So is frequently used in informal speech to string together the elements of a narrative. In most cases, this practice should not be carried over into formal writing, where readers need connections to be made more explicit. · Critics have sometimes objected to the use of so as an intensive meaning “to a great degree or extent,” as in We were so relieved to learn that the deadline had been extended. This usage is most common in informal contexts, perhaps because, unlike the neutral very, it presumes that the listener or reader will be sympathetic to the speaker's evaluation of the situation. Thus one would be more apt to say It was so unfair of them not to invite you than to say It was so fortunate that I didn't have to put up with your company. For just this reason, the construction may occasionally be used to good effect in more formal contexts to invite the reader to take the point of view of the speaker or subject: The request seemed to her to be quite reasonable; it was so unfair of the manager to refuse. See Usage Note at: as

so² (sō)

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noun 

Variant of sol¹

abbreviation 

1. seller's option
2. significant other
3. strikeout

sol¹ (sōl),
also so (sō)

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[Middle English, from Medieval Latin; see gamut.]

noun 

The fifth tone of the diatonic scale in solfeggio.

strike·out (strīḱout́)

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noun 

An out made by a batter charged with three strikes and credited to the pitcher who threw the strikes.