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[edit] Suki: 隙

An opening or gap where one is vulnerable to attack or application of a technique, or where one's technique is otherwise flawed. suki may be either physical or psychological. One goal of training is to be sensitive to suki within one's own movement or position, as well as to detect suki in the movement or position of one's partner. Ideally, a master of aikido will have developed his/her skill to such an extent that he/she no longer has any true suki.