Comma mistakes happen all the time, but serious comma mistakes — errors that change your meaning or mislead your reader — are rare. A gaudy Hawaiian shirt should have no comma because you only put commas between adjectives when the word “and” would make sense there. People who don’t know that write gaudy, Hawaiian shirt and I even see gaudy, Hawaiian, shirt, with a comma before the noun. It’s not a Hawaiian gaudy shirt, so no commas in gaudy Hawaiian shirt.) No one is going to misunderstand what you’re saying about the shirt or the word “word.”But other comma flubs are bad.

Source: Los Angeles Times August 21, 2020 19:47 UTC