1 B1 慣用的 ニュートラル
悪事、失敗、気まずい情報などをわざと隠す。
"The company tried to cover up the safety violations before the inspectors arrived."
“
There was a cover-up, no question about it.
— Bob Woodward & Carl Bernstein, 'All the President's Men', referring to Watergate (1974)
分離可能