- a very tall building, officially one taller than 984 feet (300 meters): Twenty-first century supertalls are most often mixed-use buildings that combine office space on the lower floors and a luxury hotel in the top section.
- relating to or being a very tall building: The 65-story tower is the seventh tallest building in Chicago to date, a mere 23 feet (7 meters) short of supertall status.
- very tall: Supertall players have rarely dominated in tennis.
