how
I
 /ˈhaʊ/  adv  
  1 : in what manner or way
   How and where did you meet him?
   How shall I address the President?
   How will we pay for the trip?
  : by what means
   “How did you get here?” “By bus.”
   “How did she die?” “She had cancer.”
   How do you know that?
   How did you find us?
   How could you have known?
  2 : for what reason : why
   How did you happen to move here?
   “Is it going to rain?” “How should/would I know?” [=I don't know]
  3 : to what degree, extent, or amount
  — used before an adjective or adverb
   How handsome is he?
   How much longer do we have to wait? = How much longer is the wait?
   I don't know how good the service is at the new restaurant.
   I'm not sure how old he is.
   It's a pity how rarely we see each other.
  4
  — used for emphasis before an adjective
   How old he is! [=he is very old]
   How wonderful/strange/awful!
   How kind of you to ask!
   (informal) How cool is that! [=that is really cool]
  5 a
  — used to ask if someone feels good, bad, happy, sad, etc.
   “How are you?” “Very well, thank you.”
   “How are you doing?” “Okay, I guess.”
   “How is your mother these days?” “Much better.”
   How do you feel? = How are you feeling?
  see also HOW DO YOU DO ((BELOW))
  5 b
  — used to ask if something is good, bad, etc.
   How's the new job? [=do you like your new job?]
   How are things at home?
   How did they do/perform [=did they do/perform well or badly] in the tournament?
   How was the play?
   How do you like the soup? = How is the soup? [=do you like the soup?; is the soup good?]
   I can bring it over tomorrow. How's that? [=is that all right?]
   Let me get you another blanket. There, how's that? [=is that comfortable?; is that better?]
   He will send a check. How will that be? = How would it be if he sent you a check? [=would it be acceptable if he sent you a check?]
  and how
    chiefly US    informal  
    — used for emphasis
    Prices are going up, and how! [=prices are going up very quickly]
    “Will you be glad when it's over?” “And how!” [=I will be very glad when it's over]
   
  as how
    informal   : that, 2
    I don't know as how your plan would be any better than mine.
    Seeing as how things were getting worse [=because things were getting worse], she decided to do something.
    (US, informal) She allowed as how the situation was serious. [=she admitted that the situation was serious]
  how about
   1 : does that include (someone) : what about
    “We're all going to the beach.” “How about Kenny?”
   2 informal
   2 a
    — used to show that you are very impressed by someone or something
    He won again! How about that guy! [=isn't that guy amazing/impressive?]
   
   2 b how about that chiefly US
    — used to show that you are surprised or pleased by something
    He won again! How about that! [=what good news!; isn't that great?]
   
   3  also US (informal)   how's about
   3 a
    — used to make a suggestion about what could be done
    We'll need to talk about this again. How about (meeting) next month?
    How about [=what about] driving to the coast for the weekend?
    How about another game? [=would you like to play another game?]
    What should we do tonight? How about (seeing) a movie?
    How's about some more pie?
   
   3 b
    — used to ask someone to give you something
    How about a couple of dollars until payday? [=can you loan me a couple of dollars until payday?]
    How's about (offering me) a drink?
   
   3 c
    — used to ask if someone will do something
    Well, how about it, are you coming?
   
   4
    — used to ask someone to tell you something in response to what you have just said
    I like skiing and hiking. How about you? [=what sports do you like?]
    I'm ready to go. How about you? [=are you ready, too?]
   
  how can/could
   1
    — used to show you think that someone has done or said something shocking or wrong
    “We don't need his help anyway.” “How can you say that?!” [=it is very wrong of you to say that]
    How could she just walk away from her children like that?
   
   2
    — used to express doubt that something will happen, is possible, etc.
    How could I (ever/possibly) leave this job?
    How can I (ever/possibly) thank you? [=I can never thank you enough; I am extremely grateful to you]
   
   3 how could you informal
    — used to show disappointment in someone's actions, thoughts, words, etc.
    You threw away my gift? Oh, how could you?
   
  how come
    chiefly US    informal  
    — used to ask why something has happened, is true, etc.
    “He said he's not going.” “How come?” [=why isn't he going?]
    How come you're here so early? [=why are you here so early?]
    How come no one told me?
   
  how dare you — see dare, 1
  how do you do
    formal   : hello
    — used especially when you are first introduced to someone
    How do you do, Miss Smith?
   
  how do you like that
    — used for emphasis or to show surprise or disapproval
    He's moving to Hawaii? Well, how do you like that! [=that's a surprise]
    She canceled at the last minute. How do you like that?
   
  how goes it? — see go, 1
  how's everything (going) — see everything
  how so
   : in what way : why do you think that
    “This room looks different.” “How so?” [=in what way does it look different?]
  how's that (again)
    informal   : what
    — used to request that something be repeated or explained again
    How's that? [=what did you say?] I didn't hear you.
    I don't understand. How's that again?
   
  how's that for
    informal  
    — used for emphasis to describe someone or something you think is very impressive
    He won first prize! How's that for a guy who almost didn't enter the contest at all!
    They took care of everything for us. How's that for hospitality? [=that was very hospitable]
   
  how will/would
    — used to express doubt that something will happen or is possible
    How will we (ever) get everything done on time?
    How would he manage without her? [=I don't know if he will be able to manage without her; I doubt he will manage without her]
   
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II
  conj  
  1 : in what manner or way
   We asked how we could help.
   Let me tell you how we'll pay for the trip.
   The book tells the story of how the company was founded.
   She explained how she came to live here.
   I don't know how the service is at the new restaurant.
   I remember how they fought.
   It's strange how [=the way that] things happen.
   Be careful how you talk; you could get fired.
   And that's how it is. [=that is the state of the situation]
   They want to know how you're doing. [=if you are happy, successful, etc.]
  2 : that
   She told us how she had to work hard.
   He knows how you are a valued employee.
   It's amazing how they completed the bridge so quickly.
  3 : in whatever way : however
   He'll cook it how you like it.