Asyndetons refer to the omission of conjunctions in a sentence to create a sense of urgency or emphasis. Some synonyms for asyndetons include polysyndetons, which are the excessive use of conjunctions, and hypotaxis, which is the use of subordination to create complex sentences. Other synonyms include zeugmas, which involve linking a verb to two or more different objects or phrases, and ellipses, which involve the omission of words in a sentence for dramatic effect. All of these devices are used to create rhythm, emphasis and a unique literary style in writing.