1 so /ˈsoʊ/ adverb
1 so
Learner's definition of SO
: to a degree that is suggested or stated
often + that
often used with as when making a comparison, when giving an example of some quality, or when describing someone or something
see also so much as (below)
: to a great degree : very or extremely
◊ When this sense of so is used before an adjective alone, it is considered informal.
informal : without any doubt used to make a statement more forceful
: to a definite but not specified amount
: in the same way
: in the way that is stated or suggested
often + that
informal : most certainly

and so forth

or and so on
: and other things often of the same or similar kind

even so

see 2even

ever so

see ever

every so often

see every

how so

see 1how

never so much as

see never

so far

see 1far

so help me (God)

see 1help

so long

see 2long

so much

: an amount, price, etc., that is not stated or known

so much as

used after a negative word (such as not or a contraction of not) to stress the smallness of an amount or effort
see also 1so 1a (above)

so much for

used to say that everything that can be said about or done with something or someone has been said or done
used to say that something has ended

so much so (that)

: to the extent that

so much the better

see 3better

so to speak

see speak
2 so /ˈsoʊ/ pronoun
2 so
Learner's definition of SO
used to refer to something that has just been stated or suggested

if I may say so

see 1say

or so

used to say that a number, amount, etc., is not exact
3 so /ˈsoʊ/ conjunction
3 so
Learner's definition of SO
: for that reason : and therefore
used to say the reason for something
used in speech to introduce a statement or question
used in speech to say in a somewhat rude or annoyed way that something is unimportant
used in speech to say that you have just become aware of someone or something

so as

see 2as

so far as

see 1far

so long as

see 2long
4 so /ˈsoʊ/ adjective
4 so
Learner's definition of SO
not used before a noun
: agreeing with actual facts : true

just so

see 2just
5 so /ˈsoʊ/ noun
5 so
Learner's definition of SO
[noncount] music
: sol