Breadcrumb Home > Thesaurus > S Synonyms of silt Find synonyms for: Noun 1. silt, soil, dirt usage: mud or clay or small rocks deposited by a river or lake Verb 1. silt up, silt, clog, choke off, clog up, back up, congest, choke, foul usage: become chocked with silt; "The river silted up" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of silt (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: antediluvian Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language