underfed
From Longman Dictionary of Contemporary Englishunderfedun‧der‧fed /ˌʌndəˈfed $ -ər-/ adjective HUNGRY/STARVINGnot given enough food to eat OPP overfedExamples from the Corpusunderfed• The servants were overworked and underfed.• An underfed black cat settles, unnoticed, at Isabelle's side.• fields full of underfed cattle