1. Incapable of being perceived or known
   - incognoscible, incognisable [Brit]

See also: imperceptible, unperceivable

• orchardist
• Orchestia
• Orchestiidae
• orchestra
• orchestra pit
• orchestral
• orchestral bells
• orchestrate
• orchestrated
• orchestration
• orchestrator
• orchid
• orchid cactus
• orchid family
• orchid tree
• Orchidaceae
• orchidaceous
• orchidaceous plant
• Orchidales
• orchidalgia
• orchidectomy
• orchiectomy
• orchil
• orchiopexy
• orchis