A generalized, debilitating apprehensive mood which, unlike a phobia, is not triggered by any specific object or occurrence.
Example: A man with many symptoms of anxiety calls his therapist repeatedly between visits for advice on his family, work, and medical situations.
Grinnell, R. (2008). Free-Floating Anxiety. Psych Central. Retrieved on May 5, 2015, from http://psychcentral.com/encyclopedia/2008/free-floating-anxiety/