■ pronoun & determiner
1》 asking for information specifying something.
↘[as pronoun ] asking for repetition of something not heard or confirmation of something not understood.
2》 [as pronoun ] the thing or things that.
3》 ~ever.
4》 used to emphasize something surprising or remarkable.
■ interrogative adverb
1》 to ~ extent?
2》 informal, dated used for emphasis or to invite agreement: poor show, ~?
Phrases
and (or or ) ~ have you informal and/or anything else similar.
and ~ not informal and other similar things.
~ about ——?
1》 used when asking for information or an opinion.
2》 used to make a suggestion.
~-d'you-call-it (or ~'s-its name ) informal used as a substitute for a name not recalled.
~ for? informal for ~ reason?
~ if ——?
1》 ~ would result if ——?
2》 ~ does it matter if ——?
~ is more and as an additional point; moreover.
~ of ——? ~ is the news concerning ——?
~ of it? why should that be considered significant?
~'s-his (or -its ) -name another term for ~-d'you-call-it.
~'s ~ informal ~ is useful or important.
~ with because of.
Origin
OE hwæt , of Gmc origin.