undefiled
1. [ adjective ] free from stain or blemish
Synonyms: immaculate
Related terms: pure
2. [ adjective ] (of language) not having its purity or excellence debased
Synonyms: uncorrupted
Examples:

"uncorrupted English" "learn to speak pure English undefiled"- Van Wyck Brooks

Related terms: language perfect
Similar spelling:   undefined
  undefinable
  undepicted
  undefended
  undefeated
  undeveloped
  undefendable
  unedifying
  undependable