/ Thesaurus / B Synonyms of bittersweet nightshade Find synonyms for: Noun1. bittersweet, bittersweet nightshade, climbing nightshade, deadly nightshade, poisonous nightshade, woody nightshade, Solanum dulcamara, nightshadeusage: poisonous perennial Old World vine having violet flowers and oval coral-red berries; widespread weed in North AmericaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language