virgin
noun
adjective
1 extensive tracts of virgin forest:
untouched, unspoiled, untainted, untarnished, unadulterated, pure, immaculate, pristine, flawless;
unmarked, unblemished, spotless, stainless, unsullied, unpolluted, undefiled, unaffected, unchanged, intact, inviolate, preserved;
unused, in mint condition, perfect, in perfect condition;
unexplored, uncharted, unmapped.
virgin Oxford Dictionary of English