1. Not able to be ascertained; resisting discovery
   - undiscoverable

See also: indeterminable, undeterminable

• annealing
• annelid
• annelid worm
• Burk
• burka
• burke
• burked
• Burkina Faso
• Burkina Faso franc
• burl
• burlap
• burlap bag
• burled
• burlesque
• burliness
• Burlington
• burly
• Burma
• Burma padauk
• Burmannia
• Burmanniaceae
• Burmeisteria
• Burmeisteria retusa
• Burmese
• Burmese cat