Synonyms for Primary:

adj.

basic (adjective)
central, chief, leading, direct, first, principal, underlying, initial, primal, main, immediate, elementary, fundamental, simple, prime, earliest, essential.
beginning (adjective)
initial.
bigger (adjective)
major.
bottom (adjective)
foundational.
direct (adjective)
firsthand.
earliest (adjective)
maiden, original.
pure (adjective)
clear, unalloyed, spotless, unadulterated, atomic, plain, indivisible, virtuous, purebred, uncluttered, sinless, austere, primal, nascent, stark, elemental, aboriginal, untarnished, immaculate, decent, elementary, fundamental, unsullied, angelic, essential, faultless, guiltless, Simon-pure, clean, irreducible, simple, blameless, innocent, monolithic, undefiled, foundational, formative, pure, unblemished, unadorned, untainted, basal, honorable, prime, undiluted, white, chaste, stainless, basic, bare.

n.

applied, curricular, didactic, graduate, educational, formal, academic, diachronic. elect, advance poll, pioneer, election, earliest, maiden, electioneering, campaign, by election, start, initial, chad, disenfranchise, beauty contest, direct elections. barely, before, early, by the time, previous, Since, advance, earlier. surface, underlying. immediate, near. act (noun)
primary election.
earliest (noun)
first, initial.
fundamental (noun)
central.
primary (noun)
direct, basal, original, primary coil, important, capital, of import, primary election, chief, essential, primary quill, particular, principal, first-string, primary feather, primary winding, underived, elementary, special, basic, main, firsthand.

Other synonyms:

earliest, first, underlying, original, premier, cardinal, major. key, foremost, leading, maiden, paramount. immediate. fundamental
central.

Usage examples for primary

  1. She visited the primary grades at the Bend. – That Little Girl of Miss Eliza’s by Jean K. Baird
  2. The organization itself recognizes the primary division. – The Social Work of the Salvation Army by Edwin Gifford Lamb
  3. The little teacher in the Primary Department who boards with the Wayes? – Lucy Maud Montgomery Short Stories, 1907 to 1908 by Lucy Maud Montgomery