1. Enormously
   "the bill was astronomically high"

See also: astronomic

• underdevelop
• underdeveloped
• underdevelopment
• underdo
• underdog
• underdone
• underdrawers
• underdress
• underdressed
• undereducated
• underemployed
• underemployment
• underestimate
• underestimation
• underevaluation
• underexpose
• underexposure
• underfed
• underfeed
• underfelt
• underfoot
• underframe
• underfur
• undergarment
• undergird