high–speed 
/ˈhaɪˈspi:d/ adjective
/ˈhaɪˈspi:d/ adjective 1 : designed to go or move very fast
▪ high-speed trains 2 : going or moving very fast
▪ The robbers led the police on a high-speed chase. ▪ a high-speed Internet connection
▪ high-speed trains
▪ The robbers led the police on a high-speed chase. ▪ a high-speed Internet connection
