In the olden days, the king was considered all powerful.

The correct answer is: Omnipotent.

Omnipotent means all-powerful. In the olden days, the king was considered to be all-powerful, and his word was law. He had the power to make laws, to wage war, and to punish his subjects.

Veteran means someone who has served in the military for a long time. Omnivorous means eating both plants and animals. Omniscient means knowing everything.

I hope this helps!