# speedful

> English word · Adjective

## Definitions
1. Successful, effectual, efficient.
2. Full of speed; hasty; fast.

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

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/speedful