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English definition of “flatness”

flatness

noun [U] uk   /ˈflæt.nəs/ us  

flatness noun [U] (LEVEL QUALITY)

the quality of being level and without curved, high, or hollow parts: The flatness of the desert was broken only by a few large piles of rocks.Straight, even and level

flatness noun [U] (NO EMOTION)

the fact that someone or something shows no emotion or interest: All the critics remarked on the flatness of the performance.Boredom, tedium and boring things
(Definition of flatness from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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