uncover
un- + cover
https://gyazo.com/187d9dfd21f2016fb1030e9c2df31f90
source: [シーツを開けるといない｜無料GIF画像検索 GIFMAGAZINE 916172]
verb with object
remove a cover or covering from:
…のふた, 覆いを取る.
e.g. he uncovered the face of the dead man.
discover (something previously secret or unknown):
〈秘密など〉を暴露する, 打ち明ける; 〈隠れた事柄〉を明るみに出す(reveal)
e.g. further evidence has been uncovered.
no object archaic remove one's hat, especially as a mark of respect.
｟かたく･古｠ (敬意を表して)脱帽する.