Definition of necessariness in English:

necessariness

noun

  • The fact, quality, or condition of being necessary; indispensability, necessity.

Origin

Mid 16th century; earliest use found in Thomas Wilson (d. 1581), humanist and administrator. From necessary + -ness.

Pronunciation

necessariness

/ˈnɛsɪs(ə)rɪnɪs/