Enter a clue or pattern or both:
The Clue
Like the problem of squaring the circle (9 letter answer)
The Answer
INSOLUBLE
Tags
Notes
The answer INSOLUBLE is so rare that it appears less than once every 2500 puzzles.
Related Clues
Like chalk in water
Definition
INSOLUBLE as an adjective:
1. (insoluble, indissoluble) = (of a substance) incapable of being dissolved
2. admitting of no solution or explanation; "an insoluble doubt"
3. without hope of solution; "an insoluble problem"