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English definition of “lacklustre”

lacklustre

adjective UK ( US lackluster)     /ˈlækˌlʌstər/
not very good or exciting, or not showing a lot of activity or effort: After a period of lacklustre performance, the company has finally announced some very positive results. The Australian share market closed down slightly after a day of lacklustre trading.
(Definition of lacklustre adjective from the Cambridge Business English Dictionary © Cambridge University Press)
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