underweight

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

niedowaga, zbyt lekki

below a weight considered normal or healthy

:
The doctor said the baby was slightly underweight.
Lekarz powiedział, że dziecko jest lekko niedowaga.
She was concerned about her dog being underweight.
Martwiła się, że jej pies ma niedowagę.