Comma Rule 5: Commas with descriptive adjectives
The job of a descriptive adjective is to add detail to the noun(s) to the phrase. It could be a single adjective that does not need a comma.
The lamp is blue.
"Blue" is the descriptive adjective describing the noun, which is the lamp.
When you have a series of descriptive adjectives, you would use commas. There should be a comma between every descriptive adjective except the last one.
I bought a new, powerful, thin computer.
There are commas between every descriptive adjective except the last.
If you are able to put an "and", "but", or "or" instead using a comma awkwardly, a comma would belong there.
I bought a new and powerful and thin and computer.
Now with commas:
I bought a new, powerful, thin computer. I did not put a comma after "thin" because it would sound really weird to say.
Link:
http://thecraftedword.weebly.com/comma-rule-5.html
The lamp is blue.
"Blue" is the descriptive adjective describing the noun, which is the lamp.
When you have a series of descriptive adjectives, you would use commas. There should be a comma between every descriptive adjective except the last one.
I bought a new, powerful, thin computer.
There are commas between every descriptive adjective except the last.
If you are able to put an "and", "but", or "or" instead using a comma awkwardly, a comma would belong there.
I bought a new and powerful and thin and computer.
Now with commas:
I bought a new, powerful, thin computer. I did not put a comma after "thin" because it would sound really weird to say.
Link:
http://thecraftedword.weebly.com/comma-rule-5.html