knockout

noun
1
a hard hit that makes an opponent fall to the ground and be unable to get up, so that they lose the fight
ضربه‌فنی, ناک‌اوت
2
a person or thing that is very attractive or impressive
جذاب, شگفت انگیز, فوق‌العاده جذاب
She’s an absolute knockout.
3
a competition in which the winning player/team at each stage competes in the next stage and the losing one no longer takes part in the competition
حذفی, مسابقه حذفی
They are changing the format of the tournament from a knockout to a league.
adjective
1
a knockout competition is one in which the winning player/team at each stage competes in the next stage and the losing one no longer takes part in the competition
مسابقه حذف تدریجی, حذف مستقیم, حذفی
2
a knockout blow is something that hits somebody so hard that they can no longer get up
ضربه سهمگین, زمین‌گیرکننده
The cancellation of the flight delivered the knockout blow to his plans.