saccharine UK /ˈsækəɹaɪn/US /ˈsækəɹɪn/adjective 5noun 2forms 3 adjective5 •(old-fashioned) Of or relating to sugar; sugary. •(figurative) Excessively sweet in action or disposition, especially if romantic or sentimental to the point of ridiculousness; sickly sweet, syrupy. •(old-fashioned) Containing a large or excessive amount of sugar. •Of or relating to saccharin (“a white, crystalline powder, C₇H₅NO₃S, used as an artificial sweetener in food products”). •Resembling granulated sugar; saccharoid. noun2 •(old-fashioned) Something which is saccharine or sweet; sugar. •(figurative) Sentimentalism.If Captain Archie Blaine regarded these outpourings as so much adolescent saccharine he never revealed it by a single word, a smile or the flicker of an eye. — 1960 formssaccharines · more saccharine · most saccharine