1. not worth a red cent
I thought that the necklace I found was precious but apparently it's not worth a red cent. What a pity!
I thought that the necklace I found was precious but apparently it's not worth a red cent. What a pity.
2. worthless
This is totally worthless.
The more worthless the plant, the more rapid and splendid is its growth.
Most souvenir shops are filled with worthless knick-knacks.
The antiques my father left when he died turned out to be nothing but worthless junk.
An eight-year-old car is almost worthless.
She was cheated into buying worthless stock.
worthless money
The museums are full of objects which the most cultivated taste of a period considered beautiful, but which seem to us now worthless.
In other words, this is all absolutely worthless. / So, despite all of their money, all those statues are actually completely worthless.
something that is worthless has no value, importance, or use
Employees feel worthless.
He said the jewels were worthless fakes.
I’m selling this business now before it’s completely worthless.
He made me feel stupid and worthless. Critics say his paintings are worthless.
In real life kings are powerful, but in chess they're pretty much worthless.
3. invaluable
This experience will be invaluable as a way of improving the way I study English.
The Internet is an invaluable source of information.
This locket is invaluable.
Gerry makes an invaluable contribution as Team Ireland take the track by storm.
Once again your company has provided an invaluable service to the country.
If it weren't for your invaluable help, everything would be ruined.
For Thrawn, it was an invaluable tool.
At a time like this, they can be an invaluable resource
He always told me that I was invaluable to him.
Those invaluable ancient scrolls belong in a museum.
The book will be invaluable for students in higher education.
Her contacts in government proved invaluable to the company.
invaluable advice
But he said their services to students and teachers are invaluable.
The dictionary is an invaluable tool for learning languages.