neurotic

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Of, relating to, or affected with a neurosis. No longer used in psychiatric diagnosis.
• adjective Informal Overanxious.
• noun A person suffering from a neurosis. No longer used in psychiatric diagnosis.
• noun Informal A person who is chronically anxious.

from The Century Dictionary.

• Relating to the nervous system or to neuroses: as, a neurotic disease.
• Prone to the development of neuroses.
• Capable of acting on the nerves; nervine.
• noun A disease having its seat in the nerves.
• noun A medicine for nervous affections; a nervine.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Of or pertaining to the nerves; seated in the nerves; nervous.
• adjective Useful in disorders of, or affecting, the nerves.
• adjective Of or pertaining to neurosis{2}; characteristic of neurosis{2}; caused by neurosis{2}.
• noun A disease seated in the nerves.
• noun (Med.) Any toxic agent whose action is mainly directed to the great nerve centers.
• noun A person afflicted with a neurosis{2}.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Affected with a neurosis (Wikipedia).
• adjective informal Overly anxious.
• noun A person who has a neurosis

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective affected with emotional disorder
• adjective characteristic of or affected by neurosis
• noun a person suffering from neurosis