obliquity

Noun

obliquity (countable and uncountable, plural obliquities)

1. The quality of being oblique in direction, deviating from the horizontal or vertical; or the angle created by such a deviation.
   • The Planet Earth, so stedfast though she seem, / Insensibly three different Motions move? / Which else to several Sphears thou must ascribe, / Mov'd contrarie with thwart obliquities1667, John Milton, “(please specify the page number)”, in Paradise Lost. […], London: […] [Samuel Simmons], and are to be sold by Peter Parker […]; [a]nd by Robert Boulter […]; [a]nd Matthias Walker...
   • Screwed at its axis against the side, a swinging lamp slightly oscillates in Jonah’s room; and the ship, heeling over towards the wharf with the weight of the last bales received, the lamp, flame and all, though in slight motion, still maintains a permanent obliquity with reference to the room...1851 November 14, Herman Melville, chapter 9, in Moby-Dick; or, The Whale, 1st American edition, New York, N.Y.: Harper & Brothers; London: Richard Bentley, →OCLC

   Synonyms:

   obliqueness

2. (broadly) Axial tilt.
   • Calculating by spherical trigonometry, and assuming the same obliquity, I obtain 3 dundas and 40 pulas for the ascensional arc, giving a difference in time of 3 pulas, or about one of our minutes; an error so small, that even were the Indian astronomer aware of its existence he would disregard it...1839 October, J.J. Middleton, “Description of an Astronomical Instrument presented by Raja Ram Sing, of Khota, to the Government of India”, in Journal of the Asiatic Society, volume 8, number 94...
3. Mental or moral deviation or perversity; immorality.
   • Habitually living with the elements and knowing little more of the land than as a beach, or, rather, that portion of the terraqueous globe providentially set apart for dance-houses, doxies and tapsters, in short what sailors call a "fiddlers'-green," his simple nature remained unsophisticated by...1924, Herman Melville, Billy Budd, Sailor (An Inside Narrative), Constable & Co.
   • Whereas Reef's "friends," business and personal, were mostly no strangers to trouble, nor that complicated to understand, Stray's, apt to keep more to the shadows, tended to be practitioners of obliquity—as it quite often came down to, varieties of pimp.2006, Thomas Pynchon, Against the Day, Penguin Press, page 404

   Synonyms:

   degeneracy, depravity, perversion, baseness, corruption, defilement, degradation, depravation, depravedness, impurity

4. The quality of being obscure, oftentimes willfully, sometimes as an exercise in euphemism.
   • That spiked my gun. I could not say anything. I was entirely out of verbal obliquities; to go further would be to lie, and that I would not do; so I simply sat still and suffered,—sat mutely and resignedly there, and sizzled,—for I was being slowly fried to death in my own blushes.1880, Mark Twain [pseudonym] (Samuel L[anghorne] Clemens), chapter XXV, in A Tramp Abroad; […], Hartford, Conn.: American Publishing Company; London: Chatto & Windus, →OCLC, page 253

   Synonyms:

   obscurity