1. As an adjective
   "nouns are frequently used adjectively"

See also: adjectival

• illogically
• illogicalness
• illude
• illume
• illuminable
• illuminance
• illuminant
• illuminate
• illuminated
• illuminati
• illuminating
• illumination
• illumination unit
• illuminative
• illuminator
• illumine
• illuminism
• illusion
• illusional
• illusionary
• illusionist
• illusive
• illusory
• illustrate
• illustration