instinctive

When approached by a stranger, Jared clenched his fists in an instinctive manner.

The most instinctive act of nearly every creature is to protect its young, and with humans, this response persists for a lifetime.

All forms of life have an instinctive urge to survive.

Man has an instinctive tendency to speak, as we see in the babble of our young children, while no child has an instinctive tendency to bake, brew or write.

Drone racing is a high-speed sport demanding instinctive reflexes.

Moral rules ought not to be such as to make instinctive happiness impossible.