underweight

US /ˌʌn.dɚˈweɪt/
UK /ˌʌn.dɚˈweɪt/
"underweight" picture
1.

untergewichtig, zu leicht

below a weight considered normal or healthy

:
The doctor said the baby was slightly underweight.
Der Arzt sagte, das Baby sei leicht untergewichtig.
She was concerned about her dog being underweight.
Sie war besorgt, dass ihr Hund untergewichtig war.