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. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: demagogue Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language