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deaden

verb [T]
 
 
/ˈded.ən/

Definition

to make something less painful or less strong: Morphine is often used to deaden the pain of serious injuries. Double glazing has helped to deaden the noise from the road.Becoming and making smaller or lessBecoming and making less strong
(Definition of deaden verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of deaden