for
preposition /fə(r)/, strong form  /fɔː(r)/
  /fər/, strong form  /fɔːr/
For the special uses of for in phrasal verbs, look at the entries for the verbs. For example fall for somebody is in the phrasal verb section at fall.Idioms - used to show who is intended to have or use something or where something is intended to be put
- There's a letter for you.
 - It's a book for children.
 - We got a new table for the dining room.
 - This is the place for me (= I like it very much).
 
 - in order to help somebody/something
- What can I do for you (= how can I help you)?
 - Can you translate this letter for me?
 - I took her classes for her while she was sick.
 - soldiers fighting for their country
 
 - used to show purpose or function
- a machine for slicing bread
 - Let's go for a walk.
 - Are you learning English for pleasure or for your work?
 - What did you do that for (= Why did you do that)?
 
 - used to show a reason or cause
- The town is famous for its cathedral.
 - She gave me a watch for my birthday.
 - He got an award for bravery.
 - I couldn't speak for laughing.
 - He didn’t answer for fear of hurting her.
 
 - in order to obtain something
- He came to me for advice.
 - For more information, call this number.
 - There were over fifty applicants for the job.
 
 - used to show a length of time
- I'm going away for a few days.
 - That's all the news there is for now.
 
 - used to show a distance
- The road went on for miles and miles.
 
 - used to show where somebody/something is going
- Is this the bus for Chicago?
 - She knew she was destined for a great future.
 
 - used to show that something is arranged or intended to happen at a particular time
- an appointment for May 12
 - We're invited for 7.30.
 
 - used to show the occasion when something happens
- I'm warning you for the last time—stop talking!
 
 - in exchange for something
- Copies are available for two dollars each.
 - I'll swap these two bottles for that one.
 
 - employed by
- She's working for an insurance company.
 
 - about; in connection with somebody/something
- They are anxious for her safety.
 - Fortunately for us, the weather changed.
 
 - as a representative of
- I am speaking for everyone in this department.
 
 - meaning
- Shaking your head for ‘No’ is not universal.
 
 - in support of somebody/something
- Are you for or against the proposal?
 - They voted for independence in a referendum.
 - There's a strong case for postponing the exam.
 - I'm all for (= strongly support) people having fun.
 - ‘What does Naomi think about the move?’ ‘She’s all for it.’
 
 - considering what can be expected from somebody/something
- The weather was warm for the time of year.
 - She's tall for her age.
 - He’s not bad for a beginner.
 - That's too much responsibility for a child.
 
 - used to say how difficult, necessary, pleasant, etc. something is that somebody might do or has done
- It's useless for us to continue.
 - There's no need for you to go.
 - For her to have survived such an ordeal was remarkable.
 - The box is too heavy for me to lift.
 - Is it clear enough for you to read?
 
 - used to show who can or should do something
- It's not for me to say why he left.
 - How to spend the money is for you to decide.
 
 - better, happier, etc. for something better, happier, etc. following something
- You'll feel better for a good night's sleep.
 - This room would look more cheerful for a spot of paint.
 
 
Word OriginOld English, probably a reduction of a Germanic preposition meaning ‘before’ (in place or time); related to German für, also to fore.
Idioms 
be in for it 
(British English also be for it)
- (informal) to be going to get into trouble or be punished
- We'd better hurry or we'll be in for it.
 
 
for all 
- despite
- For all its clarity of style, the book is not easy reading.
 
 - used to say that something is not important or of no interest or value to you/somebody
- For all I know she's still living in Boston.
 - You can do what you like, for all I care.
 - For all the good it's done we might as well not have bothered.
 
 
there’s/that’s… for you 
- (often ironic) used to say that something is a typical example of its kind
- She might at least have called to explain. There's gratitude for you.