/ Thesaurus / S Synonyms of sium sisarum Find synonyms for: Noun1. skirret, Sium sisarum, marsh plant, bog plant, swamp plantusage: an Asiatic herb cultivated in Europe for its sweet edible tuberous rootWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language