From, tuphoo; opaque (as if smoky), i.e. (by analogy) blind (physically or mentally) -- blind.
see GREEK tuphoo
a. properly: Matthew 9:27; Matthew 11:5; Mark 8:22; Mark 10:46; Luke 7:21; Luke 14:13, 21; John 9:1f, 13; John 10:21, etc.
b. as often in secular authors from Pindar down, mentally blind: Matthew 15:14; Matthew 23:17, 19, 24, 26; John 9:39-41; Romans 2:19; 2 Peter 1:9; Revelation 3:17.