in what way or manner, or by what means
Let's see how it works
How do you spell dahlia?
used in challenging or confronting
How do you account for the discrepancy?
used to express incredulity
How could you be so rude!
used to enquire about the state of somebody's health or the state or progress of something
How are you?
How's the market today?
(used before an adverb or adjective) to what extent or degree
How seriously hurt is she?
(used before an adverb or adjective) used intensively in exclamations
How odd!
How nice you look!
(used before an adjective or adverb) used to enquire about age, measurements, etc
How old is Peter now?
informal used for emphasis
‘Were you scared?’ ‘And how!’
used to make suggestions
How about a drink?
how does it happen; why is it?
How come we never meet?
used as a formal greeting between people meeting for the first time
used to ask emphatically
How ever could you have thought that?
used to ask about cost or other amounts
How much are the artichokes?
archaic used to summon, greet, or challenge
How now, ambitious Humphry! What means this? — Shakespeare
used to call attention or invite comment
How's that for enterprise?
= howzat