Definition of ab-usefulness in English:

ab-usefulness

noun

rare
  • Capacity to be used improperly.

Origin

Mid 19th century; earliest use found in John Ruskin (1819–1900), art critic and social critic. From ab- + usefulness, punningly after abuse or abuseful.

Pronunciation:

ab-usefulness

/abˈjuːsf(ʊ)lnəs/