1. In a humorless manner
   "he reacted rather humorlessly to these rumors"
   - humourlessly [Brit, Cdn]

See also: humorless [US]

Antonym: humorously

• downstage
• downstair
• downstairs
• downstate
• downstream
• downstroke
• downswing
• downtick
• downtime
• downtown
• downtrend
• downtrodden
• downturn
• downward
• downward-arching
• downward-sloping
• downwardly
• downwards
• downwind
• downy
• downy ash
• downy birch
• downy brome
• downy bromegrass
• downy cheat