anorexia
an·orex·ia
/ˌænəˈrɛksijə/ noun [ noncount ]
: a serious physical and emotional illness in which an abnormal fear of being fat leads to very poor eating habits and dangerous weight loss
◇ Anorexia most commonly affects teenage girls and young women. — called also anorexia nervosa — compare bulimia
an·orex·ic /ˌænəˈrɛksık/ adj
an anorexic young woman
anorexic noun , pl -ics [ count ]
She's an anorexic. [=a person suffering from anorexia]