(of language) not having its purity or excellence debased; "uncorrupted English"; "learn to speak pure English undefiled"- Van Wyck Brooks

not debased; "though his associates were dishonest, he remained uncorrupted"; "uncorrupted values"

To present participles which come from intransitive verbs, or are themselves employed as adjectives, to mark the absence of the activity, disposition, or condition implied by the participle;

not decayed or decomposed