silt up siltstone • silty · · · Info · Definitions · Synonyms · Characters · · silt up · · Text Common · · Latin · · Scripts 7 · · Length 2 · · Syllables Definitions · · · (verb) become chocked with silt. Synonyms: silt up, silt. Example: "The river silted up." · · Verb Definition 1 Synonyms · · · silt · · Synonym 1 Characters · · space U+0020 i latin small letter i U+0069 l latin small letter l U+006C p latin small letter p U+0070 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075