【How-to】What does kajja mean - Howto.org

We already talked about 감사합니다 (gamsahamnida) means “thank you”, but let’s learn a bit more about it. The Korean word for “thank you” comes from the verb 감사하다 (gamsahada), which combines gamsa (“thank” and “gratitude”) and hada (“to do”). So it means, “to thank” or “to do gratitude”.