Enter a clue or pattern or both:
The Clue
Lack of clarity (7 letter answer)
The Answer
OPACITY
Tags
Notes
The answer OPACITY is so rare that it appears less than once every 2500 puzzles.
Definition
OPACITY as a noun:
1. the phenomenon of not permitting the passage of electromagnetic radiation
2. (opacity, opaqueness) = incomprehensibility resulting from obscurity of meaning
3. (opacity, opaqueness) = the quality of being opaque to a degree; the degree to which something reduces the passage of light