Commas Between Coordinate Adjectives
Why are there commas between the adjectives in "a nice, intelligent, kind person" but no commas in "an ugly bright green sweater"? The secret lies in the difference between coordinate adjectives and noncoordinate adjectives. Two easy tests -- putting "and" between the adjectives and rearranging their order -- make it easy to know whether you should use commas. Here's the full story.