The meaning of Osu
Osu! Means patience, respect and appreciation
Kyokushin training is very demanding. You push yourself until you think you've reached your limit. First your body wants to stop, to give up, but your mind keeps pushing you. Then your mind wants to stop, but your spirit keeps you going. When you reach this point you must fight yourself and your weakness and you must win. To do this you must endure the pain, you must learn to persevere, but above all you must learn to be patient. That is Osu!
The reason you subject yourself to hard training is because you care about yourself, and to care about yourself is to respect yourself. This self respect evolves and expands to become respect for your instructor and fellow students. When you enter the dojo you bow and say "Osu" . This means you respect your dojo and the time you spend training there. This feeling of respect is OSU!
It means respect
During training you push yourself as hard as possible because you respect yourself. When you finish you bow to your insructor and fellow students and say "Osu" once more. You do this out of appreciation. This feeling of appreciation is OSU.
Osu! means appreciation
Thus OSU is a very important word in Kyokushin Karate because it signifies patience, respect and appreciation. That is why we always use the word OSU to remind ourselves of these indispensable qualities.