1. To an impracticable degree
   "this is still impracticably high"

See also: impracticable

• opisthotonos
• opium
• opium addict
• opium den
• opium poppy
• opium taker
• opopanax
• Oporto
• opossum
• opossum rat
• opossum shrimp
• opossum wood
• Oppenheimer
• oppidan
• opponent
• opportune
• opportunely
• opportuneness
• opportunism
• opportunist
• opportunistic
• opportunistic infection
• opportunistically
• opportunity
• opportunity cost