Wiktionary
n. (context idiomatic English) A problem or difficult issue that is very obvious, but is ignored for the convenience or comfort of those involved.
Wikipedia
'"Elephant in the room" or '''' Elephant in the living room '''' is an English metaphorical idiom for an obvious truth that is going unaddressed. The idiomatic expression also applies to an obvious problem or risk no one wants to discuss.
It is based on the idea/thought that an elephant in a room would be impossible to overlook.
" Elephant in the room" is an idiom referring to an obvious truth that is ignored.
Elephant in the room may also refer to:
Elephant in the Room is a 2016 Nigerian romantic comedy film directed by Asurf Oluseyi, and starring Ramsey Nouah and Zainab Sheriff in lead roles. The film, which was shot and set in Sierra Leone, was released on 8 January 2016.