1. Of, relating to, or affected with a neurosis. No longer in scientific use.
2. Informal. Overanxious: neurotic about punctuality.

1. A person suffering from a neurosis. No longer in scientific use.
2. Informal. A person prone to excessive anxiety and emotional upset.

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.