undingn.
/ˈʊndɪŋ/ A non-thing, vague abstraction, or concept having no properties.
ΘΚΠ
the mind > mental capacity > perception or cognition > faculty of ideation > faint, imperfect idea > [noun] > unfounded
fancy1471
idea1593
conception1614
figment1624
hypothesis1625
notional1653
unding1932
the world > existence and causation > existence > substantiality or concreteness > unsubstantiality or abstractness > [noun] > abstractness > abstraction
abstracta1398
abstraction1579
theory1592
abstractum1728
unding1932
1932 H. H. Price Perception v. 132 It turns out to be a mere Unding, in short, to be nothing at all.
1941 Mind 50 249 The bringing about..is non-existent, an Unding.
1950 Mind 59 477 An object without properties is assuredly an Unding.
1955 C. S. Lewis Surprised by Joy xiii. 199 I did believe (so far as one can believe in an Unding) in the Absolute.
This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2018).
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n.1932