Synonyms for Elementary:

adj.

all (adjective)
simple, unproblematic, uncomplicated.
bottom (adjective)
bottom, foundational, basic, lowest, underlying, base, fundamental.
easy (adjective)
basic, effortless, simple, manageable, undemanding.
elementary (adjective)
clear, elemental, introductory, easy, primitive, fundamental, primary, underlying, foundational, rudimentary, basal, plain, beginning, essential, uncomplicated.
essential (adjective)
inherent, prime, intrinsic.
first (adjective)
aboriginal.
fundamental (adjective)
bottom.
inchoate (adjective)
nascent.
incipient (adjective)
start.
inherent (adjective)
natural.
original (adjective)
Rudimental.
pure (adjective)
basal, aboriginal, stark, untainted, sinless, unblemished, decent, fundamental, irreducible, bare, unsullied, stainless, faultless, honorable, prime, austere, indivisible, formative, immaculate, unalloyed, pure, untarnished, clean, unadorned, undiluted, nascent, monolithic, blameless, unadulterated, primal, virtuous, spotless, essential, Simon-pure, angelic, innocent, guiltless, white, undefiled, simple, chaste, purebred, foundational, primary, atomic, clear, elemental, basic, uncluttered, plain.

n.

ultimate, raw, primitive, core, surface, natural, intrinsic, inherent. effortless, undemanding, manageable, beginning, start, mindless, come naturally/easily/easy (to someone), Rudimental, trouble-free, convenient. elementary (noun)
easy, basic, simple, uncomplicated, primary, unproblematic.

Other synonyms:

academic, mindless, rudimentary, graduate. convenient, primitive, ultimate, formal. core. Other relevant words:
curricular, formal, rudimentary, natural, inherent, ultimate, applied, mindless, Rudimental, academic, beginning, primitive, easy, didactic, effortless, trouble-free, undemanding, introductory, unproblematic, intrinsic, graduate, convenient.

Usage examples for elementary

  1. Yesterday I made my first speech with an interpreter to a teachers' association, some five hundred in all, mostly elementary school teachers conspicuous for the fact that only about twenty- five were women. – Letters from China and Japan by John Dewey Alice Chipman Dewey
  2. If Pitt lacked " Imperial imagination," he knew more than most of his contemporaries about the elementary principles of governing white men. – The Framework of Home Rule by Erskine Childers
  3. So far has the nation gone in the path of State- aided and rate- aided education, and the question is whether it is not worth while to go the comparatively little way further which is needed to make elementary education free. – Practical Politics; or, the Liberalism of To-day by Alfred Farthing Robbins