worth
Use the word “worth” when estimating the value of something. The price or the value may change, depending on the circumstances.
- This car is worth a few thousand dollars. A few years ago, it was worth much more.
- What do you think this old, antique chair is worth?
- I think this guitar is worth a lot of money.
- An investment in your education is definitely worth it.
- It’s not worth it to take risks while driving.
worth
a. worth = value
Perhaps the most common use of “worth” is as a preposition. Following “worth” is some kind of an amount.
- This old table is worth $200. (It’s valued at $200.)
- Gold is worth over $3000 an ounce.
- That painting is worth a lot of money.
- This is not worth anything.
- Do you know what this is worth?
- We bought $20 worth of tomatoes at the farmers’ market.
- I bought only ten dollars worth of gas for my car.
In these sentences, “worth” is a noun.
- What’s the worth of the house?
- The worth of the land keeps increasing.
a. worth = value

- What is this house worth?
- The real estate agents says the house is worth about $340,000.

- This old car is worth a lot of money.
- It might be worth over $50,000.
b. worth = deserving of
An experience, an amount of time, or a personal interest in something important deserves a person’s attention and is worth it.
- What is it worth to you to have time off to spend with your family.
- She has to travel to California as part of her job. Is it worth it?
- This job is not worth my time.
- Is it worth waiting in an hour-long line to get something on sale?
- This movie is not worth all the attention it gets.
- Don’t worry about what that guy said. He’s not worth worrying about.
- This is not worth it.
b. worth = deserving of

- It is worth whatever investments are necessary to save the life of a child.

- Is it worth spending so much time at work?
c. worthless
As an adjective, the word “worthless” means that something has no value.
- This old book used to be worth a lot of money, but now because it’s old and moldy, it’s almost worthless.
- The man’s contribution to the conversation was virtually worthless.
- This agreement is worthless.
- This is worthless.
- The guy we hired to do the job is very incompetent. He’s absolutely worthless.
c. worthless

- She feels totally worthless at work. She doesn’t have very much work to do.

- This camera is worthless without a proper battery and SD card.
d. expressions
The word “worth” appears in the following popular expressions:
- This has been worth the wait. (It took a long time to get, but the benefit outweighs the time spent waiting.)
- It’s worth a shot. (This is a good risk.)
- The machine is so useful, it’s worth its weight in gold. (It’s very useful and valuable.)
- That’s my opinion–for what it’s worth. (You may or may not value my opinion.)
- Is this really worth the risk? (Based on the potential negative outcome, Is this a good decision?)
- That house must be worth a fortune. (worth a fortune = a lot of money)