run-on sentence run-on • runout · · · Info · Definitions · Characters · · run-on sentence · · Text Common · · Latin · · Scripts 15 · · Length 4 · · Syllables Definitions · · · (noun) an ungrammatical sentence in which two or more independent clauses are conjoined without a conjunction. Synonyms: run-on sentence. · · Noun Definition 1 Characters · · space U+0020 - hyphen-minus U+002D c latin small letter c U+0063 e latin small letter e U+0065 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075