/ Thesaurus / C Synonyms of common alder Find synonyms for: Noun1. common alder, European black alder, Alnus glutinosa, Alnus vulgaris, alder, alder treeusage: medium-sized tree with brown-black bark and woody fruiting catkins; leaves are hairy beneathWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: confectionery Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language