WRONG:

FOR ONE

RIGHT:

FOR ONE THING

People often say “for one” when they mean “for one thing”: “I really want to go to the movie. For one, Kevin Spacey is my favorite actor.” (One what?) The only time you should use “for one” by itself to give an example of something is when you have earlier mentioned a class to which the example belongs: “There are a lot of reasons I don’t want your old car. For one, there are squirrels living in the upholstery.” (One reason.)

List of errors