Home › Words › U › undernutritionundernutritionundernutrition means inadequate nutrition, either due to a lack of food, or to the inability of the body to absorb its nutrients.Among words judged in Lexicurio's Arena, undernutrition ranks #16,730 of 42,747 for Qualifying.EtymologyFrom under- + nutrition.nounInadequate nutrition, either due to a lack of food, or to the inability of the body to absorb its nutrients.Definitions & examples from Wiktionary (CC BY-SA 3.0).