usefulness
nounUK /ˈjuːsfəlnəs/
US /ˈjuːsfəlnəs/
The quality of being helpful or good for something.
The usefulness of a flashlight is clear when the lights go out.
RELATED WORDS
OTHER MEANINGS
2. The degree to which something can serve a purpose.
We tested the usefulness of the new tool in the garden.
3. The state of being practical rather than decorative.
The usefulness of the plain box made it better than the fancy one.
4. The ability to be put to good use.
The teacher explained the usefulness of learning a second language.