rigour - noun
rigour - thesaurus
asperity
cogency
grimness
hardness
hardship
harshness
inclemency
rigor
rigorousness
rigourousness
severeness
severity
stiffness
validity
Scrabble score = 7
"I have just subscribed and look forward to continuing to use Spellzone. I have been really impressed with the program during the trial period and the students gave very positive feedback. Many thanks."
Teacher, International School, Geneva