In the legend of the brave knight, the dragon was described as 'fierce'. What is a synonym for 'fierce' in this context?

The princess was known for her 'kind' heart. What is a synonym for 'kind'?

The ancient artifact was described as 'precious'. Which word means the same as 'precious'?

The hero's journey was described as 'perilous'. What is a synonym for 'perilous'?