| Clue | Answer | |
|---|---|---|
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| Stiffness or rigidity (5) | ||
| Extreme severity (5) | ||
| Extreme hardship (5) | ||
| Quality of a good math proof (5) | ||
Solution RIGOR is 5 letters long. So far we haven´t got a solution of the same word length.
There is 1 solutions. The longest is RIGOR with 5 letters, and the shortest is RIGOR with 5 letters.
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The solution is 5 letters long.