basic
implicit
inexplicit
subjacent
ab ovo
basal
basilar
between the lines
bottom
cardinal
constituent
constitutive
covert
critical
crucial
cryptic
delitescent
dormant
elemental
elementary
esoteric
essential
foundational
fundamental
gut
hibernating
hidden
indispensable
latent
lurking
material
muffled
mystic
necessary
needful
obfuscated
obscured
occult
of the essence
original
possible
potential
primal
primary
primitive
radical
rudimentary
sleeping
submerged
allying
applying
belying
buying
complying
crying
decrying
defying
denying
drying
dyeing
dying
eyeing
flying
frying
implying
indemnifying
lying
misapplying
overflying
overlying
plying
prying
relying
replying
retrying
shying
sighing
spying
supplying
tieing
trying
tying
undying
vying
incumbent