Grammar Errors by Seriousness

Common Grammar Errors

Some grammar errors are more embarrassing than others. The list below starts with the ones that will make you look stupid and ends with the ones that you'll probably get away with. You can use this list to prioritize how you read the free lessons and tests on our site.
"In business, you are what you write."

Mistakes that will make you look really stupid

Mistakes that will make you look careless

Mistakes for which you'll be forgiven

Mistakes you'll probably get away with

"Mistakes" that might annoy your reader

See Also

A glossary of grammatical terms A list of punctuation lessons A list of easily confused words A list of sayings and proverbs