Adjective rapid has 2 senses
  1. rapid - done or occurring in a brief period of time; "a rapid rise through the ranks"
    Antonym:
    slow (indirect, via fast)
  2. rapid, speedy - characterized by speed; moving with or capable of moving with high speed; "a rapid movment"; "a speedy car"; "a speedy errand boy"
    Antonym: slow (indirect, via fast)
,Noun rapid has 1 sense
  1. rapid - a part of a river where the current is very fast
    --1 is a kind of
    waterway
    --1 is a part of river
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