Angst

n. anxiety, apprehension, insecurity, strong feeling of anxiety or apprehension

Angst is a Germanic word for fear or anxiety. It is used in English to describe an intense feeling of emotional strife. In German, it is the fear of possible suffering and a behavior resulting from uncertainty and strain which is caused by pain, loss, and death. The term Angst distinguishes itself from the word Furcht (German for "fear") in that Furcht usually refers to a material threat (arranged fear), while Angst is usually a nondirectional emotion. It is usually, but not always, associated with teenage angst, or confusion and anxiety within the self.
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Angst 1 n. A feeling of anxiety or apprehension often accompanied by depression. angst 2 abbr. angstrom [more]Angst - Community and Resources

Noun
1. an acute but unspecific feeling of anxiety; usually reserved for philosophical anxiety about the world or about personal freedom
(hypernym) anxiety

n. agitation, excitement, unrest, turmoil, anxiety, concern, fear, fright, insecurity, apprehension, worry, awe, dread, terror, horror, state of being frightening