Adverb
in a reproving or reproachful manner
Source: WordNet"H– hup!" said Roo accidentally. "Roo, dear!" said Kanga reproachfully. "Was it me?" asked Roo, a little surprised. A. A. Milne
The efficiency of the cleaning solution in liquefying wizards suggested the operation of an antithetical principal, which-" "Did you have to get him started?" Cimorene asked reproachfully. Patricia C. Wrede
she spoke to him reprovingly Source: Internet