/ Thesaurus / F Synonyms of family xanthorrhoeaceae Find synonyms for: Noun1. Xanthorrhoeaceae, family Xanthorrhoeaceae, grass tree family, liliid monocot familyusage: one of many subfamilies into which some classification systems subdivide the Liliaceae but not widely acceptedWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language