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English definition of “knife-edge”

knife-edge

adjective [before noun] uk   us  

knife-edge adjective [before noun] (SHARP)

narrow and sharp: We had to climb over a knife-edge mountain ridge.Thin and fine

knife-edge adjective [before noun] (UNCERTAIN)

describes a situation where the result is very uncertain: a knife-edge voteUncertaintyHesitatingAchievable
(Definition of knife-edge adjective from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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