Longman Dictionary of Contemporary English homepage

usefulness

noun
     
use‧ful‧ness [uncountable]
the state of being useful or the degree to which something is useful
usefulness of
There are doubts as to the usefulness of this approach (=it may not be useful).
As a commuter service, the ferry has outlived its usefulness (=is no longer useful).

Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary