wertlos in English:

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.