The DICT Development Group

  angst
      n 1: an acute but unspecific feeling of anxiety; usually
           reserved for philosophical anxiety about the world or about
           personal freedom

  77 Moby Thesaurus words for "angst":
     agitation, all-overs, anguish, anxiety, anxiety hysteria,
     anxiety neurosis, anxious bench, anxious concern, anxious seat,
     anxiousness, apprehension, apprehensiveness, boredom,
     cankerworm of care, care, cheerlessness, concern, concernment,
     discomfort, discomposure, discontent, dislike, displeasure,
     disquiet, disquietude, dissatisfaction, distress, disturbance,
     dread, dullness, emptiness, ennui, existential woe, fear, flatness,
     foreboding, forebodingness, grimness, inquietude, joylessness,
     lack of pleasure, malaise, misgiving, nausea, nervous strain,
     nervous tension, nervousness, nongratification, nonsatisfaction,
     overanxiety, painfulness, perturbation, pins and needles, pucker,
     savorlessness, solicitude, spleen, staleness, stew, strain,
     suspense, tastelessness, tediousness, tedium, tension, trouble,
     uncomfortableness, unease, uneasiness, unhappiness, unpleasure,
     unquietness, unsatisfaction, upset, vexation, vexation of spirit,
     zeal