Unknown and Up-to-date

Unknown adjective - Happening or existing without one's knowledge.

Up-to-date and unknown are semantically related. In some cases you can use "Up-to-date" instead an adjective "Unknown".

Nearby Words: unknowable, unknowing

Up-to-date adjective - Being or involving the latest methods, concepts, information, or styles.

Unknown and up-to-date are semantically related. Sometimes you can use "Unknown" instead an adjective phrase "Up-to-date".