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mammoth

adjective
 
 
/ˈmæm.əθ/

Definition

extremely large: Cleaning up the city-wide mess is going to be a mammoth task. It's a mammoth undertaking - are you sure you have the resources to cope?EnormousBig and quite big
(Definition of mammoth adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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