See examples of unprecedented used in a sentence. Never before known or experienced; · the move has already caused confusion among federal agents tasked with tackling local crime. If something is unprecedented, it has never happened before. Such an event was unprecedented in the 20th century. It is often used to describe events, situations, or actions that are unique and have no prior example or precedent. Discover everything about the word unprecedented in english: Unexampled or unparalleled. How to use unprecedented in a sentence. Definition of unprecedented adjective in oxford advanced learners dictionary. Such a move is rare, but not unprecedented. Meanings, translations, synonyms, pronunciations, examples, and grammar insights - all in one comprehensive guide. She took the unprecedented step of revealing the truth about the situation. No one knows who is in charge or what theyre supposed to do, one said. If youve never gone on a family beach vacation but youre planning one now, you could refer to it as an unprecedented decision. The term ‘unprecedented’ refers to something that has never happened before or is unlike anything that has occurred in the past. Something that is unprecedented is not known, experienced, or done before. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. The meaning of unprecedented is having no precedent : Unemployment has reached an unprecedented level. · according to collins english dictionary, and the american heritage unabridged dictionary of the english language, the word unprecedented is an adjective that means having never happened before, or great in quality, amount or scale, or not having the authority of prior example or previous example. Without previous instance;