[{"Bold_text": "adjective", "List Items": ["absolutely necessary or required; unavoidable:It is imperative that we leave.Synonyms: compelling , exigent , essential , indispensable , inescapable", "of the nature of or expressing a command; commanding.", "Grammar.noting or pertaining to the mood of the verb used in commands, requests, etc., as in Listen! Go!Compare indicative(def2) indicative(def2), subjunctive(def1) subjunctive(def1)."]}, {"Bold_text": "noun", "List Items": ["a command.", "something that demands attention or action; an unavoidable obligation or requirement; necessity:It is an imperative that we help defend friendly nations.", "Grammar.the imperative mood.a verb in this mood.", "the imperative mood.", "a verb in this mood.", "an obligatory statement, principle, or the like."]}]