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English definition of “lessen”

lessen

verb [I, T]
 
 
/ˈlesən/
to become less or to make something less: Exercise and a healthy diet lessen the chance of heart disease. Strengthen the legs and it lessens the strain on the knees.Becoming and making smaller or lessBecoming and making less strong
(Definition of lessen from the Cambridge Learners Dictionary © Cambridge University Press)
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