natural

Present in or produced by nature.

Of, relating to, or concerning nature.

Conforming to the usual or ordinary course of nature.

Not acquired; inherent.

Having a particular character by nature.

Not produced or changed artificially; not conditioned.

Characterized by spontaneity and freedom from artificiality, affectation, or inhibitions. synonym: naive.

Not altered, treated, or disguised.

Faithfully representing nature or life.