indefinable /in-di-fīˈnə-bl/

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

indefinˈableness noun

indefinˈably adverb

• screechier
• screechiest
• screeching
• screech-martin
• screech-martins
• screech owl
• screech owls
• screech-thrush
• screech-thrushes
• screechy
• screed
• screeded
• screeder
• screeders
• screeding
• screeds
• screen
• screenable
• screenager
• screenagers
• screencraft
• screencrafts
• screen door
• screen doors
• screen dump