Angst occupies a singular position in the depth-psychology corpus as the irreducible ground-note of human existence — not a discrete symptom to be eliminated but the constitutive condition from which all other swampland states derive their charge. James Hollis, whose work provides the most sustained treatment, roots angst etymologically in the Indo-Germanic angh, meaning ‘to constrict,’ linking it genetically to anger, anxiety, and angina, and positions it as the subterranean thread running beneath every compulsion, phobia, panic state, and addictive strategy the psyche erects. Where clinical psychology tends to dissolve angst into diagnosable anxiety disorders, the depth-psychological tradition, drawing on Kierkegaard’s ‘fear and trembling,’ Heidegger’s ‘Being-toward-Death,’ and Auden’s ‘Age of Anxiety,’ insists on its irreducibility: it is not a pathology but the price of consciousness. Hollis further argues a hierarchy — fear defends against anxiety, and anxiety defends against angst — suggesting that surface symptoms are always secondary formations protecting the organism from the fuller existential confrontation. Freud’s Angst/Furcht distinction (objectless dread versus object-directed fear) enters this conversation through LeDoux’s reconstruction of the Freudian legacy, while Lacan’s technical reading of Freud’s Unlust-Angst passage introduces the structural dimension of the drive’s representative. The corpus thus holds in productive tension a clinical, a phenomenological, and a depth-symbolic understanding of angst, with Hollis serving as the primary synthesizer.