He utilized his project management skills to start a new business.

He thinks that war is a necessary evil.

Do you understand the necessity of this project?

That information is unnecessary.

That information is completely unnecessary.

How do I adjust the light level in this room?

He adjusted the light levels of the lamp to change the atmosphere of the room.

His job is a daily monotony routine.

His way of speaking is very monotone.

This device is equipped with a pressure adjustment function.