false bittersweet fal·se·bit·tersweet uncommon noun 1. twining shrub of North America having three-valved yellow capsules enclosing scarlet seeds SynonymsbittersweetAmerican bittersweetclimbing bittersweetfalse bittersweetstaff vinewaxworkCelastrus scandens Related words Broader terms vine Parts Celastrus WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.