Randori

Randori (乱取り?) is a term used in Japanese martial arts to describe free-style practice. The term literally means "chaos taking" or "grasping freedom," implying a freedom from the structured practice of kata. Randori may be contrasted with kata, as two potentially complementary types of training.

The exact meaning of randori depends on the martial art it is used in. In judo, jujitsu and Shodokan Aikido, among others, it most often refers to one-on-one sparring where partners attempt to resist and counter each other's techniques. In other styles of aikido, in particular Aikikai, it refers to a form of practice in which a designated aikidoka defends against multiple attackers in quick succession without knowing how they will attack or in what order.