elephant in the room

Likely US origin, or possibly from Ivan Andreyevich Krylov's 1814 fable, The Inquisitive Man, which tells of a man going to a museum and noticing all sorts of things apart from an elephant.

• "Near-synonyms: 800-pound gorilla, gorilla in the room, 800-pound gorilla in the room"
• "There is an elephant in the room that nearly every politician and green campaigner is ignoring. It’s called population growth."
• "While the Swiss bank remained positive on the sector through 2022, the coronavirus situation remained “the elephant in the room,” he added."

• emperor's new clothes
• 800-pound gorilla
• gorilla in the room
• 800-pound gorilla in the room

• acknowledge the corn
• paromologia
• paromology