[A playful formation on BETWEEN, after words from L., such as extremity, vicinity: see -ITY.] Intermediateness of kind, quality or condition; anything intermediate.
1760. H. Walpole, Corr. (1820), II. 174 (D.). The house is not Gothic, but of that betweenity that intervened when Gothic declined and Palladian was creeping in.
1824. Miss Mitford, Village (1863), 20. A little ruinous cottage, white-washed once, and now in a sad state of betweenity.
1824. Q. Rev., XXXI. 167. It is really provoking to find [Miss Mitford using] such low and provincial corruptions of language as transmogrified, betweenity, dumpiness.
1836. Southey, Lett. (1856), IV. 448. To rejoin heads, tails, and betweenities, which Hayley had severed.