Madam, – Patrick Skene Catling, in reviewing the book of the day, Splendour & Squalor, states that "Schadenfreude is a German word with no one-word English equivalent".
But there is a one-word English equivalent. It is “epicaricacy” which means rejoicing at, taking fun in, or getting pleasure from the misfortune of others. The word is derived from the ancient Greek “epi” (meaning upon); “kharis” (meaning joy) and “kakos” (meaning evil).
The German language equivalent, Schadenfreude, is more commonly used as a loan word in English. – Yours, etc,