Word Origin and History for tonto
former term for the Western Apaches, from Spanish, literally "foolish;" probably a translation of a name given to the people by other branches of the Apache, e.g. Chiricahua Apache /bini:'édiné/, Mescalero Apache /bini:'édinendé/, both literally "people without minds," and used to designate the Western Apaches. Spanish tonto is said to be originally a nursery word, used for its sound.
Examples from the Web for tonto
And naturally, Tonto comes to life when he sees the young boy so he can tell story of John Reid, the Lone Ranger.
The writers try to explain his mannerisms by revealing that Tonto has an intense guilt complex.
They had gone some distance into the wood, and quite out of sight of Tonto by this time.
He practices riding on Tonto, the donkey, now, and he has had his own lasso since he was six.
Bobo” his detractors might call him, or “tonto”—but never “pendejo” nor “traidor.The Gilded Man
The fact that he had survived the fight was known only to himself and Tonto.
"As simple as all that," the masked man commented when Tonto finished his recital.