Adverb
in a doubtful manner
in a questionable and dubious manner
Source: WordNetUmm,” said Ooo, dubiously. "Do I detect a questioning tone in your voice?” inquired the bird tartly. "Which might imply that you find a flaw in my reasoning? Lin Carter
Gerald shook his head doubtfully Source: Internet
these were estates his father questionably acquired Source: Internet
Rito are viewed upon by outsiders somewhat dubiously. Source: Internet
During the most recent period of “full employment” (the also dubiously named “Clinton economic boom”), the unemployment rate never dipped below 3.8 percent. Source: Internet
The financial situation in Mogale City, where the ANC dubiously ousted a DA-led coalition, is already so dire that the municipality has a cash balance of –R16 million. Source: Internet