adj. |
[1] |
indispensable
,
necessary
,
requisite
,
required
,
important
,
imperative
,
vital
,
material
,
quintessential
|
[2] |
fundamental
,
indispensable
,
basic
,
intrinsic
,
elemental
,
elementary
,
principal
,
primary
,
key
,
main
,
leading
,
chief
|
[3] |
all-important
,
all important
,
crucial
,
of the essence
|
[4] |
substantive
|
|