Synonyms

• rigorousness
• heaviness
• severeness
• worriment
• difficulty
• oppressiveness
• inconvenience
• burdensomeness
• onerousness
• hard
• rigor
• hardness
• effortfulness
• severity
• quality
• rigourousness
• ruggedness
• grimness
• niceness
• difficult
• troublesomeness
• hardship
• formidability
• rigour
• toughness
• asperity