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hot

adjective (CAUSING DISAGREEMENT)
 
 
/hɒt/ US  /hɑːt/ (hotter, hottest)

Definition

C1 describes a subject that causes a lot of disagreement or discussion: Global warming has become a very hot issue.Debate and discussion
(Definition of hot adjective (CAUSING DISAGREEMENT) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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