It was determined that this medicine is a counterfeit drug.

He is behaving like a stupid vassal.

I accidentally dropped the eye drops from the second floor.

His hair was messed up from bed hair.

He spent time in front of the mirror to fix his bed hair.

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.

This restaurant has an all-you-can-drink plan.