This is a word, and try guessing it!

a person or thing that came before and influenced sb/sth else that is similar

I think perhaps you are talking about [outrunner]?

回复 @圆环之理：Not exactly but very similar. This is the synonym and some letters of "outrunner" are the same as this word.

回复 @啊啊是谁都对：forerunner?

回复 @浅风仁樱：That's right! And wanna try giving us a question?

回复 @啊啊是谁都对：Let me see