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English definition of “flatline”

flatline

verb [I]     /ˈflæt.laɪn/ informal
to be at a low level and not increase: Have widescreen TV prices finally flatlined?Being or appearing similar or the same to stop being popular or successful: Her acting career has flatlined.Unsuccessful (people and things) to dieDeath and dying flatlining     /-ɪŋ/ noun [U] The effects of the music industry's flatlining have been felt by retailers.Being or appearing similar or the sameUnsuccessful (people and things)
(Definition of flatline verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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