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headlong

adverb, adjective
 
 
/ˈhed.lɒŋ/ US  /-lɑːŋ/

Definition

[before noun] with great speed or without thinking: The car skidded and plunged headlong over the cliff. In the headlong rush to buy houses, many people got into debt.Fast and rapidShort in time US for head-firstFalling and droppingMoving downwards
(Definition of headlong adverbadjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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