"Ferengi are humanoids."
Translation:yoqpu' chaH verenganpu''e'.
The Klingon word for that is yoq. We don't know the etymology of that word, but it doesn't seem to have any relationship to the word tlhIngan. However, I could definitely imagine a Klingon who is learning English objecting to the word "humanoid" and suggesting that the word "Klingonoid" would be just as good or better.