Definition of speed

noun (n)

• distance travelled per unit time (noun.time)

  Synonym: velocity
  

  source: wordnet30
• a rate (usually rapid) at which something happens (noun.attribute)

  Synonym: fastness, swiftness
  

  Example:
  The project advanced with gratifying speed.
  

  source: wordnet30
• changing location rapidly (noun.act)

  Synonym: hurrying, speeding
  

  source: wordnet30
• the ratio of the focal length to the diameter of a (camera) lens system (noun.linkdef)

  Synonym: f number, focal ratio, stop number
  

  source: wordnet30
• a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression (noun.artifact)

  Synonym: amphetamine, pep pill, upper
  

  source: wordnet30
• Prosperity in an undertaking; favorable issue; success. (noun)

  source: webster1913

verb (v)

• move fast (verb.motion)

  Synonym: belt along, bucket along, cannonball along, hasten, hie, hotfoot, pelt along, race, rush, rush along, step on it
  Antonym: dawdle, linger
  

  source: wordnet30
• move faster (verb.change)

  Synonym: accelerate, quicken, speed up
  Antonym: decelerate, retard, slow, slow down, slow up
  

  source: wordnet30
• move very fast (verb.motion)

  Synonym: hurry, travel rapidly, zip
  

  Example:
  The runner zipped past us at breakneck speed.
  

  source: wordnet30
• travel at an excessive or illegal velocity (verb.motion)

  Example:
  I got a ticket for speeding.
  

  source: wordnet30
• cause to move faster (verb.change)

  Synonym: accelerate, speed up
  Antonym: decelerate, slow down
  

  source: wordnet30
• To go; to fare. (verb)

  source: webster1913
• To cause to be successful, or to prosper; hence, to aid; to favor. (verb)

  source: webster1913

Visual Synonyms (Thesaurus)

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