emperor's new clothes

idiomatic plural plural-only

(idiomatic) Something obvious and embarrassing that is politely ignored or that goes unacknowledged.

Japanese Meaning

明らかに見えているが、あえて触れられずにいる不都合な事実や状況。 / 誰もが知っているが、あえて認めたり指摘したりしない、恥ずかしい現実。

During the meeting, Sara pointed out the emperor's new clothes, and everyone shifted uncomfortably.

会議中、サラは皆が見て見ぬふりをしている明らかで恥ずかしい事を指摘すると、場の空気が重くなった。

Sense（1）

(idiomatic) Something obvious and embarrassing that is politely ignored or that goes unacknowledged.

Marks & Spencer announced a 19% fall in annual profits on Tuesday.