hypochondriac UK /ˌhaɪpəʊˈkɒndɹiæk/US /ˌhaɪpoʊˈkɑndɹiæk/adjective 2noun 1forms 3 adjective2 •Related to, or affected by hypochondria. •Related to, or located in the hypochondrium. noun1 •A person affected with hypochondria. formshypochondriacs · more hypochondriac · most hypochondriac