indefinable /in-di-fīˈnə-bl/

1. That cannot be defined
2. Hard to identify or describe

indefinˈableness noun

indefinˈably adverb

• velarising
• velarium
• velarization
• velarizations
• velarize
• velarized
• velarizes
• velarizing
• velars
• untarred
• untasted
• untasteful
• untaught
• untax
• untaxed
• untaxes
• untaxing
• unteach
• unteachable
• unteachableness
• unteachablenesses
• unteaches
• unteaching
• unteam
• unteamed