from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Characterized by rapid motion; swift.
  • adjective Accomplished or arrived at without delay; prompt. synonym: fast.

from The Century Dictionary.

  • Successful; prosperous.
  • Marked by speed of movement; going rapidly; quick; swift; nimble; hasty; rapid: as, a speedy flight.
  • Rapidly coming or brought to pass; not deferred or delayed; prompt; ready.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Not dilatory or slow; quick; swift; nimble; hasty; rapid in motion or performance

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Characterized by a rapid or swift motion.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective accomplished rapidly and without delay
  • adjective characterized by speed; moving with or capable of moving with high speed


from Wiktionary, Creative Commons Attribution/Share-Alike License

From Middle English spedi, from Old English spēdiġ ("having good speed, lucky, prosperous; having means, wealthy, opulent, rich in material wealth; rich in, abounding in, abundant, plenteous, copious; powerful"), from Proto-Germanic *spōdigaz (“successful, hurried”), equivalent to speed +‎ -y. Cognate with Scots spedie ("speedy"), Dutch spoedig ("speedy, swift, rapid, quick"), German sputig, spudig ("industrious, speedy").



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