English edit

Etymology edit

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

Adjective edit

speedful (comparative more speedful, superlative most speedful)

  1. (archaic) Successful; prosperous.
  2. (archaic) Effectual; efficient.
  3. (nonstandard) Full of speed; hasty; fast.

Synonyms edit

Antonyms edit

Derived terms edit

Related terms edit