Adjective
Essential
;
crucial
;
extremely
important
.
Noun
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
.
Adverb
In
an
manner
,
imperatively
.