usefulness - definition and synonyms

noun [uncountable] 

Your browser doesn’t support HTML5 audio

/ˈjuːsf(ə)lnəs/
  1. the fact of being useful, or the ability to be useful in particular situations

    I’m not sure about the usefulness of her observations.

    outlive its usefulness (=no longer be useful):

    Many people think the system has outlived its usefulness.