1. Put down: to put (something) in place on the floor or ground

Putting down [=installing] a new hardwood floor would greatly increase the value of your home.

2. put down: to think of (someone) as (a specified kind of person or thing)

Most people put him down as [=believe that he is] a fanatic.

3. put down: to say critical or insulting things about (someone or something)

A friend who is constantly putting you down is not a friend.

4. put down: to give (an amount of money) as a first payment when you are buying something that costs a lot of money

We put 10 percent down on the house. = We put down a 10 percent deposit on the house..

5. put down: to stop (a violent or dangerous activity) by using force

Police were brought in to help put down the riot.