Dourly
Part of speech: adverb
Definition: In a dour manner.
Sullenly
Part of speech: adverb
Definition: In a sullen manner.
Dourly as an adverb is in a dour manner. while Sullenly as an adverb is in a sullen manner.
Part of speech: adverb
Definition: In a dour manner.
Part of speech: adverb
Definition: In a sullen manner.
We hope you now know whether to use Dourly or Sullenly in your sentence.