essential Synonyms - page 2
newsworthiness
pertinent
principal
primal
predominant
prime
pressing
prerequisite
preeminent
precondition
plasmic
pivotal
need
inbuilt
built-in
lifesaving
life-or-death
life-and-death
biogenic
prototypical
prototypal
purebred
meat and potatoes
minimal
meaningful
newsworthy
very important
most important
unreplaceable
unexpendable
sine qua non
nonnegotiable
irreplaceable
foundational
iconic
no-frills
bare bones
amur
amora
valuable
unparagoned
underlying
underlie
unavoidable
umbilical
systemic
sufficient
substantial
subsistent
virtual