Legendary (adjective)

1. Famous or well-known, especially for some remarkable quality.
2. Of the nature of a legend; traditional but unverifiable.

Origin:

From middle english legendarius, from latin legendaryus, from legenda ("things to be read"), from legere ("to read").

Examples:

1. He was a legendary figure in the world of science.
2. The legendary status of King Arthur.
3. He was considered a legendary figure in his field.
4. The legendary city of El Dorado.
5. The legendary singer's voice still echoes in our ears.