Synonyms for Spotless:

adj.

clean (adjective)
clean, stainless, refined, polished, immaculate, spick-and-span, tidy, hygienic, unstained, orderly, speckless, neat, uncontaminated, pure, Taintless, fastidious, gleaming, sanitary, unsullied, fresh, unspotted, unsoiled, sterile.
innocent (adjective)
blameless, unsophisticated, unspotted, snowy, naive, pure-hearted, chaste, untainted, innocent, unblemished, childlike, untarnished, virginal, innocuous, angelic, guiltless, white.
pure (adjective)
primary, virtuous, decent, sinless, nascent, chaste, faultless, prime, untainted, elementary, monolithic, aboriginal, basal, immaculate, white, undefiled, bare, unadulterated, plain, stainless, clear, simple, fundamental, pure, innocent, essential, formative, undiluted, clean, untarnished, foundational, blameless, unblemished, irreducible, primal, purebred, austere, guiltless, Simon-pure, uncluttered, snowy, honorable, stark, basic, unadorned, unalloyed, elemental, angelic, atomic, unsullied, indivisible.
very clean; innocent (adjective)
decent, clean, snowy, sanitary, unsullied, hygienic, blameless, gleaming, immaculate, untarnished, unstained, unsoiled, chaste, faultless, undefiled, irreproachable, pure, stainless, unblemished.
virtuous (adjective)
virtuous.

n.

moral, just, proper, high-minded, correct, without blemish, without spot, irreproachable, ethical. cleanly, antiseptic. spotless (noun)
speckless, immaculate, spic-and-span, clean, spick-and-span.

Other synonyms:

antiseptic. neat
cleanly.
Other relevant words:
irreproachable, cleanly, ethical, proper, moral, spic-and-span, polished, speckless, correct, antiseptic, gleaming, fresh, high-minded, just.

Usage examples for spotless

  1. Her husband sat at a table in one corner of the spotless kitchen, eating a belated lunch. – Stories of the Foot-hills by Margaret Collier Graham
  2. How white and spotless I am! – Anna St. Ives by Thomas Holcroft
  3. Had the lucky beggar, whoever he was, read those lines he must have felt that, in the lists of life, there rested on him the sacred obligation to bear a spotless shield and a true lance. – The Portal of Dreams by Charles Neville Buck