sentence can be as short as four words – for instance, I drive she walks, or even I drive, she walks, – because in these short cases there are two subjects paired with two intransitive verbs. An imperative sentence like "Run walk" can be a run-on even if it only has two words. While some sources view comma splices as a form of run-on sentences, others limit the term to independent clauses that are joined without punctuation. Per The American Heritage Dictionary of the English Language, the term "run-on sentence" is also used for "a very long sentence, especially one lacking order or coherence". See also Comma splice References External links Syntactic entities Sentences by type Punctuation English grammar Clauses