A knockout (abbreviated to KO or K.O.) is a fight-ending, winning criterion in several full-contact combat sports, such as boxing, kickboxing, Muay Thai, mixed martial arts, karate, some forms of taekwondo …

The meaning of KNOCKOUT is the act of knocking out : the condition of being knocked out. How to use knockout in a sentence.

If you describe someone or something as a knockout, you think that they are extremely attractive or impressive.

KNOCKOUT definition: an act or instance of knocking out. See examples of knockout used in a sentence.

knock•out (ˈnɒkˌaʊt) n. 1. an act or instance of knocking out. 2. the state or fact of being knocked out. 3. a knockout blow. 4. Informal. a person or thing overwhelmingly attractive, appealing, or successful.

knockout noun [C] (COMPETITION) (US elimination tournament) a competition in which only the winners of each stage play in the next stage, until one competitor or team is the final winner:

Dec 20, 2025 · It took longer than many predicted, but Anthony Joshua finally hunted down Jake Paul, dropping him four times in a sixth-round knockout victory.

Dec 20, 2025 · Why knockout loss to Anthony Joshua should mark the end of Jake Paul as a serious attraction in boxing By choosing survival, Paul provided even more reasons to tune out

KNOCKOUT meaning: 1 : an occurrence in which a boxing match ends when a fighter has been knocked down by a punch and is unable to start fighting again before 10 seconds have passed; 2 : a …

Not all boxing matches end this way, but a knockout is the most exciting (and dangerous) way for a match to end. This word is also used to mean "gorgeous person," so if someone tells you you're a …