pile Pelion on Ossa

== English == === Etymology === From the Ancient Greek story of Otus and Ephialtes, who piled Mount Pelion on Mount Ossa in an attempt to storm Mount Olympus. === Verb === pile Pelion on Ossa (third-person singular simple present piles Pelion on Ossa, present participle piling Pelion on Ossa, simple past and past participle piled Pelion on Ossa) (idiomatic) To make a difficult situation even worse. === References === “pile Pelion on Ossa” in Farlex Dictionary of Idioms, Huntingdon Valley, Pa.: Farlex, Inc., 2024; reproduced on Idioms and phrases, TheFreeDictionary.com, Huntingdon Valley, Pa.: Farlex, Inc., 2003–2026. “pile Pelion on Ossa”, in Collins English Dictionary, 2011–present.