Actually the title was named after Caesar to mean emperor after his death.
It was so influential that many languages use this word as well. Famous examples would be Tzar in Russian or Keiser in German.
Kaiser actually is one of the few German words with ‘ai’ instead of ‘ei’ and reflects basically the Roman pronounciation of Caesar.
Btw: Pronouncing ‘C’ as ‘ts / z’ instead of ‘k’ has been a Germanic thing already back then.
Actually the title was named after Caesar to mean emperor after his death. It was so influential that many languages use this word as well. Famous examples would be Tzar in Russian or Keiser in German.
Kaiser actually is one of the few German words with ‘ai’ instead of ‘ei’ and reflects basically the Roman pronounciation of Caesar.
Btw: Pronouncing ‘C’ as ‘ts / z’ instead of ‘k’ has been a Germanic thing already back then.