Reacting immediately and sharply:
(Informal) Rapid and without delay.
Carried out or performed without delay:
Quick, clever, and acute in devising or understanding:
Done or made with haste; quick; hurried
Disposed to dissipation; wild:
Quick in manner or movement; energetic
(--- popularly) Not diphthongized [the short a in “pan”]
Short in length
Moving with a slow pace or motion; not swift.
Marked by a retarded tempo:
Find another word for speediest. In this page you can discover 14 synonyms, antonyms, idiomatic expressions, and related words for speediest, like: quickest, swiftest, rapidest, snappiest, promptest, nimblest, hastiest, fleetest, fastest, briskest and shortest.