imperative verb
US /ɪmˈper.ə.tɪv vɜrb/
UK /ɪmˈper.ə.tɪv vɜrb/

1.
a verb that expresses a command, request, or instruction
:
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In the sentence 'Close the door,' 'close' is an imperative verb.
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Common imperative verbs include 'go,' 'stop,' and 'listen.'