IPA: /ˌoʊvərˈnʊrɪʃt/
KK: /oʊvərˈnʊrɪʃt/
Having received too much nourishment, often leading to being overweight or unhealthy.
The doctor advised her to eat a balanced diet to avoid becoming overnourished.
Overnourished → It is formed from "over-" (meaning excessively) and "nourish" (from Old French *nourrir*, meaning to feed or provide sustenance). The word "overnourished" means excessively fed or provided with nutrients.
Think of being fed 'excessively' ('over-') — that's why 'overnourished' means having too much nourishment.