n. One who complains or fusses a great deal, especially about unimportant matters; a fusspot
the GNU version of the Collaborative International Dictionary of English
n. a person who thinks excessively about unfortunate things that might happen; one who is excessively concerned about matters of trifling importance.
The Century Dictionary and Cyclopedia
n. A nervous, fidgety person.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. thinks about unfortunate things that might happen
Word Usage
"In the past, the President notoriously spent immense amounts of time poring over the, leading one exasperated congressman to describe her as a "fussbudget" (defined by the American Heritage dictionary as a "person who fusses over trifles."