Free dictionary online: translation in English, Spanish, French, Italian, Chinese, Russian, definitions, synonyms...
Results found in several dictionaries: Collins, Collaborative Dictionary
disgustedly 
  adv  [say, reply] d'un air dégoûté, avec dégoût 
`It's a little late for that,' Ritter said disgustedly.   

Collaborative Dictionary     English-French
'disgustedly' found in translations in French-English dictionary
d'un air dégoûté adj. disgustedly Reverso General Dictionary 

"Collins English French Electronic Dictionary © HarperCollins Publishers 2005"