内幕 うちまく
uchimaku

Noun

1. lowdown; inside information; hidden circumstances; inside facts; inner workings; undisclosed circumstances

かれ内幕 うちまくをばらすといっていますよ。
karewa uchimakuo barasuto itte imasuyo.
He says he'll blow the story open.
Noun

2. inner curtain (in a military encampment)

Dated
Related to 外幕
Other forms: