adverb
in what manner or way
for what reason :why
to what degree, extent, or amount - used before an adjective or adverb
used for emphasis before an adjective
a - used to ask if someone feels good, bad, happy, sad, etc.
b - used to ask if something is good, bad, etc.
and how
chiefly US informal - used for emphasis
as how
informal :2that
how about
does that include (someone) :what about
informal
a - used to show that you are very impressed by someone or something
b how about that chiefly US - used to show that you are surprised or pleased by something
also US (informal) how's about
a - used to make a suggestion about what could be done
b - used to ask someone to give you something
c - used to ask if someone will do something
used to ask someone to tell you something in response to what you have just said
how can/could
used to show you think that someone has done or said something shocking or wrong
used to express doubt that something will happen, is possible, etc.
how could you informal - used to show disappointment in someone's actions, thoughts, words, etc.
how come
chiefly US informal - used to ask why something has happened, is true, etc.
how dare you
how do you do
formal :hello - used especially when you are first introduced to someone
how do you like that
used for emphasis or to show surprise or disapproval
how goes it?
how's everything (going)
how so
in what way :why do you think that
how's that (again)
informal :what - used to request that something be repeated or explained again
how's that for
informal - used for emphasis to describe someone or something you think is very impressive
how will/would
used to express doubt that something will happen or is possible
conjunction
in what manner or way
that
in whatever way :however
US