Adverb
In a somber manner; sombrously; gloomily; despondingly.
Source: Webster's dictionaryStephanie could see the greed seep into the watery eyes of her father's other brother, a horrible little man called Fergus, as he nodded sadly and spoke sombrely and pocketed the silverware when he thought no one was looking. Derek Landy
`That's sure bad news,' said Dowd, somberly Source: Internet