imperative /ɪmˈpɛɹ.ə.tɪv/adjective 4noun 3forms 3 adjective4 •Of, or relating to the imperative mood. •Essential; crucial; extremely important.That you come here right now is imperative. •Expressing a command; authoritatively or absolutely directive.imperative orders •Having semantics that incorporates mutable variables. noun3 •An essential action, a must: something which is imperative.Visiting Berlin is an imperative. •The grammatical mood expressing an order (see jussive). In English, the imperative form of a verb is the same as that of the bare infinitive.The verbs in sentences like "Do it!" and "Say what you like!" are in the imperative. •A verb in the imperative mood. formsimperatives · more imperative · most imperative