/ Thesaurus / T Synonyms of tree lupine Find synonyms for: Noun1. tree lupine, Lupinus arboreus, shrub, bushusage: evergreen shrub of the Pacific coast of the United States having showy yellow or blue flowers; naturalized in AustraliaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: aversion Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language