Sped imp. & p. p. of Speed.
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  Speed v. i. [imp. & p. p. Sped Speeded; p. pr. & vb. n. Speeding.]
  1. To go; to fare. [Obs.]
     To warn him now he is too farre sped.   --Remedy of Love.
  2. To experience in going; to have any condition, good or ill; to fare.
  Ships heretofore in seas like fishes sped;
   The mightiest still upon the smallest fed.   --Waller.
  3. To fare well; to have success; to prosper.
  Save London, and send true lawyers their meed!
  For whoso wants money with them shall not speed!   --Lydgate.
  I told ye then he should prevail, and speed
  On his bad errand.   --Milton.
  4. To make haste; to move with celerity.
     I have speeded hither with the very extremest inch of possibility.   --Shak.
  5. To be expedient. [Obs.]
  speed
       n 1: distance travelled per unit time [syn: velocity]
       2: a rate (usually rapid) at which something happens; "the
          project advanced with gratifying speed" [syn: swiftness,
           fastness]
       3: changing location rapidly [syn: speeding, hurrying]
       4: the ratio of the focal length to the diameter of a (camera)
          lens system [syn: focal ratio, f number, stop number]
       5: a central nervous system stimulant that increases energy and
          decreases appetite; used to treat narcolepsy and some
          forms of depression [syn: amphetamine, pep pill, upper]
       v 1: step on it; "He rushed down the hall to receive his guests";
            "The cars raced down the street" [syn: rush, hotfoot,
             hasten, hie, race, pelt along, rush along, cannonball
            along, bucket along, belt along] [ant: linger]
       2: move faster; "The car accelerated" [syn: accelerate, speed
          up, quicken] [ant: decelerate]
       3: travel at an excessive or illegal velocity; "I got a ticket
          for speeding"
       4: move very fast; "The runner zipped past us at breakneck
          speed" [syn: travel rapidly, hurry, zip]
       5: cause to move faster; "He accelerated the car" [syn: accelerate,
           speed up] [ant: decelerate]
       [also: sped]