/ Thesaurus / H Synonyms of hazel alder Find synonyms for: Noun1. smooth alder, hazel alder, Alnus serrulata, alder, alder treeusage: common shrub of the eastern United States with smooth barkWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language