Definition of SPEEDFUL

speedful

Adj

  • Successful, effectual, efficient.
  • Full of speed; hasty; fast.

Origin / Etymology

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

Antonyms

speedless

Scrabble Score: 14

speedful: not valid in Scrabble (US) TWL Dictionary
speedful: not valid in Scrabble (MW) Merriam-Webster Dictionary
speedful: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 0

speedful is not valid in Words With Friends