cast a pall on

cast a pall on/over something

if an unpleasant event or piece of news casts a pall on something, it spoils it News of her sudden death cast a pall on the awards ceremony.
See also: cast, on, pall
References in periodicals archive ?
Contrast that with various recent events that have cast a pall on the Olympic flame: Investigators are currently examining whether officials in Salt Lake City made illegal payments and gifts to Olympic officials to win the city the right to host the 2002 Winter Games.