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English definition of “rapid”

rapid

adjective uk   /ˈræp.ɪd/ us  
B2 fast or sudden: The 1990s were a period of rapid change/growth. I was startled by a rapid movement to my left. His response to the accusation was rapid.Fast and rapidShort in time
rapidity
noun [U] uk   /rəˈpɪd.ɪ.ti/ us    /-ə.t̬i/ formal
rapidly
adverb uk   /-li/ us  
Fast and rapidShort in time
(Definition of rapid from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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