# What does OSS mean?

OSS (or OSU) is the universal greeting in BJJ that every practitioner should know. This powerful Japanese expression means respect, acknowledgment, and perseverance - essentially saying "I understand and will push through." You will hear it constantly in jiu-jitsu: greeting teammates, thanking train...

**[Read full answer on BJJ Notes](https://www.bjjnotes.app/knowledge-base/what-does-oss-mean)**

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**Tags:** etiquette, beginner

**Source:** [BJJ Notes Knowledge Base](https://www.bjjnotes.app/knowledge-base/what-does-oss-mean)