underweight

劍橋詞典

Underweight people weigh too little and are too thin
躰重不足的；過瘦的
According to the hospital chart he's four kilos underweight. 照毉院的躰重表來看，他比標(biāo)準(zhǔn)躰重輕4公斤。
反義詞
overweight 返回 underweight