Imperative
Imperative (im*per"ȧ*tiv) , adjective
[Latin imperativus, from imperare to command; pref. im- in + parare to make ready, prepare: compare French impératif. See Perade, and compare Empire.]
1.
Expressive of command; containing positive command; authoritatively or absolutely directive; commanding; authoritative; as, imperative orders.
The suit of kings are imperative.
2.
Not to be avoided or evaded; obligatory; binding; compulsory; as, an imperative duty or order.
3.
(Grammar) Expressive of command, entreaty, advice, or exhortation; as, the imperative mood.
Imperative , noun
(Grammar) The imperative mood; also, a verb in the imperative mood.