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Entry 1 sense Webster, 1913

Swiftness

· Swift·ness · IPA /ˈswɪftnɪs/
01 n. The quality or state of being swift; speed; quickness; celerity; velocity; rapidity; as, the swiftness of a bird; the swiftness of a stream…
  1. 1.
    The quality or state of being swift; speed; quickness; celerity; velocity; rapidity; as, the swiftness of a bird; the swiftness of a stream; swiftness of descent in a falling body; swiftness of thought, etc.