To create, contribute to, or manipulate a situation in a way that results in an unfair advantage for someone or something (over someone or something else). Likened to rigging a deck of playing cards in one's favor before a card game. Often used in passive constructions. It just feels like the current system has stacked the deck in favor of the wealthy. When it comes to getting hired, the deck are stacked in favor of those who know how to write a compelling résumé and cover letter.