1. In a horrifying manner
   "he laughed horrifyingly"

See also: horrifying

• boot camp
• boot disk
• boot out
• boot sale
• boot-shaped
• bootblack
• bootboys
• booted
• booted armillaria
• bootee
• booth
• boothose
• bootie
• bootjack
• bootlace
• bootleg
• bootlegger
• bootlegging
• bootless
• bootlick
• bootlicker
• bootlicking
• bootmaker
• bootstrap
• Boott's goldenrod