φυσικός

Romans 1:26 φυσικὴν natural

For this reason God gave them over to dishonorable passions. Even their women exchanged natural relations for unnatural ones.

Romans 1:27 φυσικὴν natural

Likewise, the men abandoned natural relations with women and burned with lust for one another. Men committed indecent acts with other men and received in themselves the due penalty for their error.

2 Peter 2:12 φυσικὰ as creatures of instinct

These men are like irrational animals, creatures of instinct, born to be captured and destroyed. They blaspheme in matters they do not understand, and like such creatures, they too will be destroyed.