fastback
UK[ˈfɑːstbæk]US[ˈfæstbæk]
n
A car with a roof that slopes down in an unbroken curve to the rear of the vehicle.
Morpheme Breakdown
fast
back
fast
swift
back
rear part
Etymology
The term 'fastback' is a modern automotive compound, originating in the mid-20th century. It combines the English adjective 'fast,' which evolved from Old English fæst (initially meaning "firm" but later "rapid"), with the noun 'back,' from Old English bæc (meaning "rear part"). The logic is descriptive: the car's rear section ('back') is designed with a streamlined, sloping roofline intended to suggest or facilitate speed ('fast'). This design term contrasts with other body styles like the 'notchback' or 'squareback,' emphasizing aerodynamic form over a sharply truncated rear.
Analysis
Structure: fast (swift) + back (rear part)
- fast: From Old English fæst meaning "firm, fixed, steadfast," which evolved to also mean "swift, quick" in Middle English. In this compound, it carries the sense of "swift."
- back: From Old English bæc meaning "the rear part of the human body" or "the hind part of anything." In this compound, it refers to the rear section of a car's body.
Examples
The classic 1960s Mustang is often celebrated for its sleek fastback design.
The new electric coupe features a dramatic fastback silhouette that improves its aerodynamic efficiency.
He prefers the sportier look of a fastback over the more traditional sedan.