Definition of go-fast in English:

go-fast

adjective

  • 1Attributive Characterized by or favouring rapid or prompt action.

  • 2Attributive That causes or assists something (originally a boat) to move or proceed quickly; that moves or proceeds quickly.

Origin

1940s; earliest use found in Saturday Night. From go + fast.

Pronunciation

go-fast

/ɡəʊˈfɑːst//ɡəʊˈfast/