Intensity of adjectives

Your question is not intelligible. Do you mean - bright, brighter, brightest?

Bright, vivid, dazzling... I need to add 2 more adjectives in between bright and vivid, and another word in between vivid and dazzling to show the intensity of bright

Try a synonym site.

I tried to look for the synonym and the dictionary, but it is hard to find the degree of intensity of bright... Can I put gleaming in between bright and vivid? And use glaring in between vivid and dazzling?

They do not mean different intensities as you seem to think.

The question from my book is:
Add adjectives to the spaces below to show the change in intensity of this adjective. Use a thesaurus to help you.
Bright ....... vivid ....... dazzling

Another question from my book is:
Put this list of adjective in order to show the change in intensity
Vicious unkind cruel hurtful disagreeable

What is the title of your book, and who is its author?

This is my school book. It's Hodder Cambridge Primary English Workbook Stage 4. The author is Rachel Axten-Higgs.

This is good.

My suggestion: unkind disagreeable hurtful cruel vicious.

Thank you so much for your help. I really appreciate it... 😃