IPA: /ɪnˈflɪkʃən/
KK: /ɪnˈflɪkʃən/
The act of causing something unpleasant to happen to someone or something, often involving pain or suffering.
The infliction of pain is sometimes necessary for medical treatment.
Infliction is formed from "in-" (meaning into or upon) and "flictio" (from "fligere", meaning to strike). The word refers to the act of striking or imposing something upon someone, often in a negative context such as pain or suffering.
Think of something being 'struck upon' ('in-' means upon and 'flictio' relates to striking) — that's why infliction means to impose something, often harm or suffering.