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Definition of fastback
fastback
/ˈfæst.bæk/
fast · back
Plural:fastbacks
fastback Lexical Profile
CEFR
C1
Grade
9
Tier
2
Usage
Rare
Syllables
2
fastback Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
An automobile body style characterized by a single, continuous slope from the roof to the rear bumper, or a car built with such a design.
Example
"He spent two years restoring a classic 1967 Mustang fastback in his garage."
Antonyms
View all antonyms for fastback• adjective
1
Having a roofline that slopes continuously and smoothly down to the rear bumper of a vehicle.
Example
"The automaker unveiled a sleek fastback coupe at the annual international auto show."
Antonyms
View all antonyms for fastback• Nearby Words
Word Origin & Etymology
Coined in mid-20th-century American English as a compound of 'fast' (in the sense of streamlined or aerodynamic) and 'back' (referring to the rear of a vehicle).
Cite this Entry
Wordmom. (2026). Definition of Fastback. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/fastback