“Jackpot” in Japanese
Short answer
Jackpot in Japanese is “ジャックポット” (jakkupotto). Full meaning: jackpot.
Other ways to say “Jackpot” in Japanese
大当たり
ooatari great success, big hit, smash hit, winner; (hitting the) jackpot, big win; being right on the mark (of a prediction), being bang on, hitting the nail on the head
大当り
ooatari great success, big hit, smash hit, winner; (hitting the) jackpot, big win; being right on the mark (of a prediction), being bang on, hitting the nail on the head
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