RIGOROUSNESSES
Scrabble letter values: R1I1G2O1R1O1U1S1N1E1S1S1E1S1 = 15
Definition
RIGOROUSNESSES is the plural of RIGOROUSNESS.
noun RIGOROUSNESS: something hard to endure.
Synonyms of RIGOROUSNESS: asperity, grimness, hardship, rigor, rigour, severity, severeness, rigourousness