赘语（或赘字、赘词、赘言、冗词、冗语、pleonasm）可视为话语中的表现方式。意即过多不必要的话，或是重复同样意思的词语。

Pleonasm (/ˈpliːənæzəm/; Greek: πλεονασμός, pleonasmos, from πλέον, pleon, "more; too much") is the use of more words or parts of words than is necessary or sufficient for clear expression: examples are black darkness, burning fire, or people's democracy. Such redundancy is, by traditional rhetorical criteria, a manifestation of tautology. That being said, one may employ pleonasm for emphasis, or because the phrase has already become established in a certain form.