indefinable /in-di-fīˈnə-bl/

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

indefinˈableness noun

indefinˈably adverb

• spares
• sparest
• spare time
• spare-time
• spare times
• spare tyre
• spare tyres
• sparganium
• sparganiums
• sparge
• sparged
• sparger
• spargers
• sparges
• sparging
• spar-hawk
• spar-hawks
• sparid
• sparids
• sparing
• sparingly
• sparingness
• sparingnesses
• spark
• spark chamber