impermissible /im-pər-misˈi-bl/

1. Not permissible
2. Not allowed

impermissibilˈity noun

• underhandedly
• underhandedness
• underhandednesses
• underhands
• under-hangman
• under-hangmen
• under hatches
• underhonest
• underhung
• underinsure
• underinsured
• underinsures
• underinsuring
• underinvestment
• under-jaw
• underjawed
• under-jaws
• underkeep
• underkeeper
• underkeepers
• underkeeping
• underkeeps
• underkept
• underking
• underkingdom