For

FOR

Preposition

1 In support of or in favour of (a person or policy):

Our soldiers who fought for India.
They voted for Kejriwal in a referendum. [A few regret it now ;-)]

2 Affecting, with regard to, or in respect of:

Puneet is responsible for the efficient running of our academy. 

3 On behalf of or to the benefit of:

Our ministers got a present for terrorists. [They have started releasing them now ;-)]

• Employed by:

Mohit is a tutor for Kanpur University.

4 Having (the thing mentioned) as a purpose or function:

Money for the exchange of information. [A few regret it now ;-)]

The necessary tools for making a picture frame.

5 Having (the thing mentioned) as a reason or cause:

She is proud of her family for their support.
I could dance and sing for joy.

6 Having (the place mentioned) as a destination:

They are leaving for Kanpur tomorrow.

7 Representing (the thing mentioned):

The ‘F’ is for Fascinating.

8 In place of or in exchange for:

Will you swap these two bottles for that one? [A beer can for two cold drink-bottles. Nor bad!]

• Charged as (a price):

Copies are available for Rs 30.

9 In relation to the expected norm of:

She was tall for her age

It’s quite warm for this time of year

10 Indicating the length of (a period of time):

He was jailed for 12 years.
I haven’t seen him for some time.

11 Indicating the extent of (a distance):

He crawled for 300 yards.

12 Indicating an occasion in a series:

The camcorder failed for the third time.

Because; since:

He felt guilty, for he knew that he bore a share of responsibility for Fanny’s death.