usefulness ˈjuːsf(ʊ)lnəs/ noun the quality or fact of being useful. “faults that affect the book’s usefulness” synonyms: functionality, practicality, serviceability, fitness, adequacy, handiness,neatness, convenience, utility, use, effectiveness, efficacy; To be needed, to feel useful is such an integral part of our being and of life that the moment there is no more need of being useful, life has no more meaning…