Agonises is a verb meaning to experience or feel intense pain or long-lasting distress; in British English it often implies a prolonged sense of pain, worry, or struggle, while in broader usage it can mean to lament or obsess over a problem. The verb form is used with third-person singular as agonises and with other subjects as agonise or agonising as the present participle. It conveys deep, emotional suffering or torment.
Full pronunciation guide