A person who is following a special eating plan or reducing their food intake to lose weight or improve health.
From 'diet,' which comes from Old French 'diete,' from Latin 'diaeta,' borrowed from Greek 'diaita' meaning 'a way of living.' The -er suffix makes it an agent noun describing a person who diets.
Interestingly, the word 'diet' originally didn't mean restriction at all—it meant 'a way of living' in a much broader sense. The modern obsession with 'dieting' only really started in the Victorian era; before that, most cultures just ate what was available seasonally without the psychological drama we've invented around food!
Complete word intelligence in one call. Free tier — 50 lookups/day.