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. (2016). Free-Floating Anxiety. Psych Central. Retrieved on December 15, 2017, from https://psychcentral.com/encyclopedia/free-floating-anxiety/