a. [f. TREACLE sb. + -Y.] Resembling treacle in quality or appearance; having the sweetness or sticky consistence of treacle; also fig. characterized by excessive sweetness: cloyingly sweet; sugared, honeyed.
1733. Shaw, Chem. Lect., xi. (1755), 218. A proper, or rich, syrupy, or treacly Substance.
1800. W. Taylor, in Monthly Mag., X. 317. It bestows even on novelty of thought, a flat featureless mien, an insipid treacly sameness, very unfavourable to impression.
1837. T. Hood, in Mem. (1860), I. 159. Whose book although so treacley does not please the natives.
1866. R. M. Ferguson, Electr. (1870), 243. India-rubber some specimens of it having become treacly.
Hence Treacliness, treacly quality or condition.
1876. Leicester Chron., 18 Nov., 5/3. The shiny, horny quality which the opponents of transparent painting call treacliness.
1884. Nature, 22 May, 89/1. The property of viscosity or treaclyness possessed more or less by all fluids is the general influence conducive to steadiness.