say it: UHN-dur-wayt
underweight is an adjective meaning "being very thin". It is pronounced /ˈʌndɚˌweɪt/ — UHN-dur-wayt. It carries one recorded sense.
Definitions, synonyms and semantic relations for underweight come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.