Angst “a feeling of dread, anxiety, or anguish” is a borrowing from German, in which the noun is capitalized, from Old High German angust. If you are wondering whether angst is related to anxiety and anguish, your suspicion is correct; all three words ultimately derive from a Proto-Indo-European root, angh- “tight, painful,” which is the source of numerous pain-related terms beginning with ag-, ang-, or anx-. From Old English, derivatives include hangnail (originally agnail, but altered by association with hang). Via Old Norse angr “sorrow, grief,” English has borrowed anger. Through Latin angere “to strangle” (stem anx-) and angustus “narrow,” we have anxiety and anguish. Last, from Ancient Greek anchónē “strangling,” English has inherited angina “an attack of painful spasms.” Angst was first recorded in English in the 1840s.