malnourished

动词 malnourish:

1. provide with insufficient quality or quantity of nourishment
   同义词：undernourish, malnourish

形容词 malnourished:

1. not being provided with adequate nourishment

1. A severe, often gangrenous inflammation of the mouth or genitals, occurring usually after an infectious disease and found most often in children in poor hygienic or malnourished condition.
   走马疳，坏疽性口炎嘴或生殖器部分严重的经常为生疽性的发炎，通常在感染了传染病后发生，最常发病于卫生条件极差或营养状况不良的孩子
2. Don't always eat hamburgers for meals, or else you'll get malnourished.
   别总把汉堡包当饭吃，不然你会营养不良的。

mal.nour.ished

adj.（形容词）
Affected by improper nutrition or an insufficient diet.
营养不良的：受营养不良或食量不足影响的