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English definition of “should”


modal verb (DUTY)   /ʃʊd, ʃəd/
used to express that it is necessary , desirable , or important to perform the action of the following verb : He should have told me about the change in plans . People like that should go to jail . Where should we meet tonight ?
(Definition of should modal verb (DUTY) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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