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

See also: humorless [US]

Antonym: humorously

• frontal
• frontal bone
• frontal cortex
• frontal eminence
• frontal gyrus
• frontal lobe
• frontal lobotomy
• frontal sinus
• frontal suture
• frontally
• frontbencher
• frontier
• frontier settlement
• frontiersman
• frontierswoman
• frontispiece
• frontlet
• frontmost
• frontstall
• frontward
• frontwards
• frore
• frosh
• frost
• frost fish