RichThesaurus
additional
additional
antonyms
necessary
essential
primary
principal
central
basal
major
needed
primitive
indispensable
basic
elemental
integral
elementary
main
key
fundamental
intrinsic
first
substratal
rudimentary
required
chief
vital
radical
underlying
relevant
crucial
simplest
minus
mandatory
prime
underived
primordial
negative
vestigial
less
constitutional
innate
nuts-and-bolts
beginning
larval
diminished
matched
existing
requisite
insufficient
embryonic
substrative
early
meat-and-potatoes
normal
uncompleted
constitutive
axiological
pertinent
significant
bottom
introductory
theoretical
paramount
original
grass-roots
inherent
appropriate
capital
bottom-line
native
foundational
immature
organic
undeveloped
natural
cardinal
axiomatic
structural
detrimental
simple
sustaining
nonsupplementary
initial
fewer
abecedarian
additional
definitions
adj
Supplemental or added to something.
noun
Something added.