The meaning of the word "Kemosabe" that Tonto used to refer to the Lone Ranger has been a topic of debate for years. There are several theories about its origin and meaning, and it appears that there is no conclusive evidence as to its true definition or its roots. Some of the theories include:

• "Idiot" in Apache: Native American writer Sherman Alexie, who is of Coeur DAlene descent, has said that kemosabe means “idiot” in Apache.

• "He who doesnt understand": Some people have pointed out that kemosabe sounds a lot like the Spanish phrase "quien no sabe," which means "he who doesnt understand".

• "Faithful friend" or "trusted scout": The term "Kemosabe" is derived from "gimoozaabi," an Ojibwe and Potawatomi word that may mean "he/she looks out in secret." It has been occasionally translated as "trusty scout" or "faithful friend".

• "Long lost friend": In the first television episode of The Lone Ranger, Tonto finds the Lone Ranger after being ambushed by the evil Cavendish gang. Tonto recognizes a ring that he gave the ranger when they were youth many years ago and calls him Kemo Sabe, as in recognition of a long lost friend.

In conclusion, the meaning of "Kemosabe" that Tonto used to refer to the Lone Ranger is uncertain and has been the subject of much debate.