pronoun
a - used to ask for information about someone or something
b - used to describe a question
a - used to ask someone to say something again because you have not clearly heard or understood it
b informal - used to express surprise, excitement, etc.
informal - used to ask what someone's last name is
that which :the one or ones that
the kind that :the same as
something that
the thing or things that
Guess what is often used to tell someone that you have surprising news.
anything or everything that :whatever
informal - used to direct attention to something that you are about to say
or what
informal
used to ask about what is happening, being done, etc.
used to ask if someone agrees with you
say what
what about
does that include (someone) :how about (someone)
how does that affect (someone or something) :what should be done about (someone or something)
used to make a suggestion about what could be done
used to ask someone to tell you something in response to the thing that you have just said
what&
for what purpose or reason
what have you
informal :any of the other things that might also be mentioned
what if
what would happen if
what does it matter if - used to say that something is not important
what of
formal :how does that affect (someone or something) :what should be done about (someone or something)
why does (something) matter
what's it to you?
informal :why do you want to know - used to respond in a somewhat angry or annoyed way to a question that you do not want to answer
what's more
in addition :furthermore
what's up?
US informal - used as a friendly greeting
what's what
informal :the true state of things :the things that need to be known or understood in order to make good judgments, decisions, etc.
what's with
or what's up with
informal
what is the reason for (something)
what is wrong with (someone or something)
adjective
always used before a noun
used to ask someone to indicate the identity or nature of someone or something
used to say that someone or something is remarkable for having good or bad qualities
used to refer to an amount that someone has, uses, etc.
adverb
in what way
so what
informal - used to say that something said or done is not important
what with
used to introduce the part of a sentence that indicates the cause of something
US