Definition of "incoherent"
incoherent
adjective
comparative more incoherent, superlative most incoherent
Not making logical sense; not logically connected or consistent.
Quotations
By which thus still ouermuch busying your selfe in matters passing your skill, it maketh you so forgetfull, that oftentimes you are faine to vtter matters incoherent, and much contradictorie.
1599, Ralph Brooke, A Discouerie of Certaine Errours Published in Print in the Much Commended Britannia, London, page 35
[…] the big dark dining table twinkled here and there in the small candle-light; the pictures on the wall, all of them very brown, looked vague and incoherent.
1908, Henry James, chapter XV, in The Portrait of a Lady (The Novels and Tales of Henry James; III), New York edition, volume I, Boston, Mass., New York, N.Y.: Charles Scribner’s Sons; republished as The Portrait of a Lady (EBook #2833), United States: Project Gutenberg, 1 September 2001
The historian […] is a sort of novelist, but one who instead of inventing plot and character is obliged to discover them; who instead of setting characters in motion against one another with foreknowledge of their natures and destinies tries to guess at what often incoherent characters were up to amid a distraction of lies and suppressions.
2002, Julian Barnes, chapter 1, in Something to Declare, New York: Knopf, page 10
(obsolete) Not holding together physically; loose; unconnected.
Quotations
[…] Some hasty and undigested Thoughts, on a Subject I had never before considered, which I set down against our next Meeting, gave the first entrance into this Discourse, which having been thus begun by Chance, was continued by Intreaty; written by incoherent parcels; and, after long intervals of neglect, resum'd again, as my Humour or Occasions permitted; and at last, in a retirement, where an Attendence on my Health gave me leisure, it was brought into that order thou now seest it.
1690, John Locke, An Essay Concerning Human Understanding, London: Thomas Basset, The Epistle to the Reader
That Sand-Stone does not still consolidate: i.e. that Matter which was, a few Years ago, lax, incoherent, and in form of Earth, or of Sand, does not become daily more hard and consistent, and by little and little acquire a perfect Solidity, and so turn to Stone; as others have asserted.
1695, John Woodward, An Essay toward a Natural History of the Earth and Terrestrial Bodies, London: Richard Wilkin, Part 2, p. 110