lucid

adjective

• 1expressed clearly; easy to understand:a lucid account write in a clear and lucid style
• showing or having the ability to think clearly, especially in intervals between periods of confusion or insanity:he has a few lucid moments every now and then
• Psychology (of a dream) experienced with the dreamer feeling awake, aware of dreaming, and able to control events consciously.

• 2 literary bright or luminous:birds dipped their wings in the lucid flow of air