This may run counter to primeval instinct, but it has its rewards.

Unless there is strong training to overcome his primeval instincts, anyone can act in a way that's out of control.

Life made one final attempt to reach Kane, relentlessly demanding expression of its most primeval instinct.

And then Alda did something she had no idea would awaken the primeval instinct in her opponent.

As though by some primeval instinct, the remaining rats rushed at the weakened ratter and pulled her down.

It was pure, primeval instinct to hate anything which dared to put itself on equality with man.

Some primeval instinct to protect the young made him rush to Dani first, but he was already dead, his body blown to pieces.

However this might be, Bastin's primeval instincts and abilities were of the utmost service to us.

My primeval instincts should have been satisfied, yet I as far from content.

You invoke the basic, primeval instincts inherent in all animals.