rapidity

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a rate that is rapid (Freq. 1)
• Syn:
celerity, quickness, rapidness, speediness
• Derivationally related forms:
speedy (for: speediness), rapid (for: rapidness), rapid, quick (for: quickness)
• Hypernyms:
pace, rate
• Hyponyms:
fleetness, immediacy, immediateness, instantaneousness, instancy,
dispatch, despatch, expedition, expeditiousness, promptness, promptitude

• Từ đồng nghĩa / Synonyms:
  celerity, quickness, rapidness, speediness