indefinable /in-di-fīˈnə-bl/

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

• confiture
• confitures
• confix
• confixed
• confixes
• confixing
• conflagrant
• conflagrate
• conflagrated
• conflagrates
• conflagrating
• conflagration
• conflagrations
• conflate
• conflated
• conflates
• conflating
• conflation
• conflations
• conflict
• conflict diamond
• conflicted
• conflicting
• confliction
• conflictions