The children hunkered down in the yard playing a game with five stones.
hunt * down +
The police hunted the killer down.
hunt * out +
It took me ages to hunt out the photos.
hunt * up +
(在書籍、文件等中) 搜尋，尋找；找到 (信息、資料)
He hunted up a copy of the book in the library.
hush * up +
不讓 (事件) 宣揚出去；不讓 (事件) 聲張；閉口不談
The company tried to hush up the scandal, but it still got into the newspapers.