all:
essential.
unnecessary:
designed,
planned,
needed,
essential,
careful,
necessary.
noun:
must,
indispensable,
needful,
no-frills,
crucial,
important,
vital,
all-important,
urgent,
primary,
constitutional,
basal,
necessity,
imperative,
life-sustaining,
staple,
organic,
requirement,
virtual,
substantial,
requisite,
required,
biogenic,
substantive,
constitutive,
constituent,
pressing.
object:
essential.
X
