To inflict means to cause something harmful or unpleasant to happen to someone. When you inflict pain, damage, or suffering on another person, you're the one making it happen to them. A bully might inflict emotional hurt through cruel words. A clumsy move in soccer might inflict an injury on another player. A boring lecturer might inflict three hours of tedious talk on an unfortunate audience.

The word usually appears with negative things: you inflict wounds, punishment, misery, or hardship. You wouldn't say someone inflicts happiness or inflicts kindness. That's why the word carries a harsh feeling.

Notice that inflict is something done to others, not to yourself. A country might inflict sanctions on another nation. A teacher might inflict extra homework on students who misbehaved. The person or thing doing the inflicting has power over the person receiving whatever unpleasant thing is being delivered.

Sometimes people use it with dark humor, like saying a terrible school play inflicted boredom on the audience, or that a cook inflicted a burnt casserole on dinner guests. The exaggeration makes the point that whatever happened was genuinely unpleasant, even if not truly harmful.