See lucid in Webster's New World Roget's A-Z Thesaurus II
adjective
Mentally healthy:
compos mentis, rational, sane. Idioms: all there, in one's right mind, of sound mind . See saneAdmitting light so that objects beyond can be seen:
clear, crystal clear, crystalline, limpid, pellucid, see-through, translucent, transparent. See clearFree from what obscures or dims:
clear, crystal clear, crystalline, limpid, pellucid, see-through, transparent. See clear, touch
Learn more about lucid