infliction

(noun) the act of imposing something (as a tax or an embargo). Synonyms: imposition.

(noun) an act causing pain or damage.

(noun) something or someone that causes trouble; a source of unhappiness. Synonyms: annoyance, bother, botheration, pain, pain in the neck, pain in the ass. Examples: "Washing dishes was a nuisance before we got a dish washer." "A bit of a bother." "He's not a friend, he's an infliction."