Tachi-waza refers to standing techniques used in various forms of martial arts, particularly in judo. These techniques involve throws and takedowns executed while both the practitioner and their opponent are on their feet. Mastery of tachi-waza is essential for effective competition and self-defense. In judo, tachi-waza includes a variety of throws, such as ippon seoi nage and harai goshi. Practitioners learn to use balance, timing, and leverage to unbalance their opponents and execute successful throws. Understanding tachi-waza is crucial for developing a well-rounded skill set in martial arts.