1. Lacking substance or reality; incapable of being touched or seen
   - intangible

See also: immaterial, nonmaterial

• Senecio
• Senecio aureus
• Senecio bigelovii
• Senecio cineraria
• Senecio cruentus
• Senecio doublasii
• Senecio glabellus
• Senecio jacobaea
• Senecio milkanioides
• Senecio triangularis
• Senecio vulgaris
• Senefelder
• senega
• senega root
• senega snakeroot
• Senegal
• Senegal gum
• Senegalese
• Senegalese franc
• Seneka snakeroot
• senesce
• senescence
• senescent
• seneschal
• senga root