uncorrupted

Adjective (3)

1. (of language) not having its purity or excellence debased“uncorrupted English”“learn to speak pure English undefiled — Van Wyck Brooks”Synonyms: undefiled
2. not decayed or decomposedSynonyms: unspoiled
3. not debased“though his associates were dishonest, he remained uncorrupted”“uncorrupted values”