different between necessariness vs unnecessariness

English

Etymology

necessary +? -ness

Noun

necessariness (uncountable)

1. The state or characteristic of being necessary.
   • 1898, S. S. Laurie, "The Growth of Mind as a Real and the Influence of the Formal on the Real", The School Revew, vol. 6, no. 4, p. 255:

     Time and space are themselves part of the phenomena or object. . . . It is the necessariness of these perceptions which has led to their being elevated to the position of abstract wholes in which all things exist.

   • 1981, Jerald P. Keene, "The Ill-Advised State Court Revival of the 'McNabb-Mallory' Rule," The Journal of Criminal Law and Criminology, vol. 72, no. 1, p. 222:

     The test was so general that defendant flooded the court's docket with appeals seeking judicial examination of the necessariness of prearraignment detentions.

   • 2001 Nov. 19, Jason Cowley, "Books: Still life in mobile homes," New Statesman (UK) (retrieved 30 Sep. 2008):

     A journey, one would think, ought to have a certain necessariness; there must be a reason for going.

Usage notes

• Necessitude, necessitousness, necessitation, necessariness are all nouns closely related to necessity, but they tend to have narrower ranges of usage than the term necessity. The principal sense of necessitude and necessitousness is impoverishment, but the plural form of the former (necessitudes) denotes a set of circumstances which is inevitable or unavoidable. Necessitation is used to suggest necessity as a philosophical or cosmic principle. Necessariness tends to be used to stress a direct connection to the adjective necessary.

English

Etymology

unnecessary +? -ness

Noun

unnecessariness (uncountable)

1. The state or characteristic of being unnecessary.
   • 1808, Works of Joseph Hall, D.D, Vol. 9, edited by Josiah Pratt, London, p. 9:

     The unavoidableness of which effects hath carried some of their Casuists into an opinion, of the unnecessariness of devotion in these holy businesses: so as one says . . . "Though it be convenient, that the Communicant should have actual devotion; yet, it is not necessary."

   • 1913, Arnold Bennett, The Human Machine, p. 73:

     A disciplined brain will at once show the unnecessariness of most ambitions, and will ensure that the remainder shall be conducted with reason.

   • 2007, Karen von Hahn, "Unnecessary Accessories of the Rich and Famous," Globe and Mail, 15 June (retrieved 30 Aug. 2009):

     In the sad case of Paris Hilton, whose sheer unnecessariness epitomizes her career, her unnecessary accessory of choice is an SUV.

Synonyms

• gratuitousness, needlessness

Antonyms

• necessariness
• necessity