superfast
adjective
su·per·fast ˌsü-pər-ˈfast 
: extremely fast
superfast speeds
superfast travel
Word History
First Known Use
1911, in the meaning defined above
- monobromination
- monobromo-
- Monocacy
- monocaine
- monocalcium
- monocalcium phosphate
- monocanthi
- Monocanthidae
- monocanthidaes
- monocanthuses
- monocanthusses
- monocarboxylic
- monocardian
- monocarp
- monocarpal
- monocarpellary
- monocarpian
- monocarpic
- monocarpous
- monocarps
- Monocaulus
- monocephalous
- monoceros
- monoceroses
- monochami