| adj. |
| [1] |
crucial
,
vital
,
essential
,
urgent
,
imperative
,
necessary
,
needed
,
needful
,
required
,
requisite
,
demanded
,
in demand
,
called-for
,
of the essence
,
important
,
compelling
|
| [2] |
key
,
essential
,
unavoidable
,
inescapable
,
ineluctable
,
compulsory
,
mandatory
,
obligatory
|
|
