New, fresh, novel describe things that have not existed or have not been known or seen before. New refers to something recently made, grown, or built, or recently found, invented, or discovered: a new car; new techniques. Fresh refers to something that has retained its original properties, or has not been affected by use or the passage of time: fresh strawberries; fresh ideas. Novel refers to something new that has an unexpected, strange, or striking quality, generally pleasing: a novel experience.

Did you mean unmew?