1. (noun) something hard to endure

• grimness
• hardship
• rigor
• rigorousness
• rigour
• rigourousness
• severeness
• severity

2. (noun) harshness of manner

• sharpness

1. (noun) something hard to endure

• difficultness
• difficulty

2. (noun) harshness of manner

• ill nature

1. (noun) something hard to endure

• sternness

1. (noun) harshness of manner

• bluntness
• dullness

1. (noun) something hard to endure

• grim
• inexorable
• relentless
• stern
• unappeasable
• unforgiving
• unrelenting
• severe
• terrible
• wicked

2. (noun) harshness of manner

• sharp
• sharp-worded
• tart