Wiktionary
sulfurously
adv. In a sulfurous way.
Usage examples of "sulfurously".
At the second such, Iktis cursed sulfurously, damning all smugglers, the late madam, the Heritage and persons of whom Neeka had never heard for failing to keep the runnels in repair or at least apprising him of the locations and extents of disrepair.
Behind her, Zeren swore sulfurously and struggled to his feet through restraining hands.