underived (adjective) fundamental: basic, important
Sinonime: axiological,
axiomatic, basal,
bottom, bottom-line,
cardinal,
central, constitutional, constitutive,
crucial,
elemental,
elementary,
essential,
first, foundational, grass-roots,
indispensable,
integral,
intrinsic,
key,
major, meat-and-potatoes,
necessary,
organic,
original,
paramount,
primary,
prime,
primitive,
primordial,
principal,
radical,
requisite,
rudimentary,
significant, structural, substratal, substrative,
supporting, sustaining,
theoretical, underived,
underlying,
vitalAntonime: additional,
advanced,
auxiliary,
extra,
minor,
secondary,
subordinate,
trivial,
unimportant