indefinable /in-di-fīˈnə-bl/

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

indefinˈableness noun

• a cut above
• acutance
• acutances
• acute
• acute accent
• acute accents
• acute angle
• acute angles
• acutely
• acuteness
• acutenesses
• acuter
• acute rheumatism
• acutes
• acutest
• ACW
• acyclic
• acyclovir
• acyclovirs
• acyl
• acyls
• -ad
• ad
• ad.
• A.D.