Breadcrumb Home > Thesaurus > S Synonyms of sourdough Find synonyms for: Noun 1. sourdough, leaven, leavening usage: a leaven of dough in which fermentation is active; used by pioneers for making bread 2. sourdough, settler, colonist, prospector usage: a settler or prospector (especially in western United States or northwest Canada and Alaska) WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of sourdough (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: parallax Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language