Word.ws English Dictionary

speedful

speedful adjective: successful, effectual, efficient.

Adjective

speedful (comparative more speedful, superlative most speedful)

  1. (archaic) Successful, effectual, efficient.
  2. (nonstandard) Full of speed; hasty; fast.

Antonyms of speedful

Forms of speedful

comparativemore speedful
superlativemost speedful

Origin of speedful

From Middle English speedful, spedeful, spedful (“successful, prosperous”), equivalent to speed + -ful.

Words formed from speedful

Questions about speedful

What does speedful mean?
Speedful means successful, effectual, efficient.
What part of speech is speedful?
Speedful is an adjective.

Words near speedful in the dictionary

  1. speeders
  2. speedest
  3. speedeth
  4. speedfreak
  5. speedfreaks
  6. speedful
  7. speedfully
  8. speedfulness
  9. speedgame
  10. speedgames
  11. speedgun

Source and license

Adapted from Wiktionary: speedful (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “speedful.” Word.ws, https://word.ws/speedful. Based on Wiktionary, CC BY-SA 4.0.