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English definition of “uppermost”

uppermost

adjective     /ˈʌpəməʊst/
highest: the building's uppermost floorsUp and upwardMoving upwards
be uppermost in sb's mind to be the most important thing someone is thinking about: The safety of her children was uppermost in her mind.Continually thinking about
(Definition of uppermost adjective from the Cambridge Learner's Dictionary © Cambridge University Press)

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