adjective
- without previous instance; never before known or experienced; unexampled or unparalleled: an unprecedented event.
adjective
- having no precedent; unparalleled
adj.1620s, from un- (1) “not” + precedented. In common use from c.1760.
adjective
adjective
adj.1620s, from un- (1) “not” + precedented. In common use from c.1760.