Learn how to say Sweepstakes correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word sweepstakes:
(US) = sweepstake
a lottery in which the stakes of the participants constitute the prize
the prize itself
any event involving a lottery, esp a horse race in which the prize is the competitors’ stakes
Often shortened to: sweep
C15: originally referring to someone who sweeps or takes all the stakes in a game