Bozo
WordNet
noun
(1) An informal term for a youth or man
"A nice guy"
"The guy's only doing it for some doll"
(2) A man who is a stupid incompetent fool
WiktionaryText
Etymology
- Originating c. 1910. Maybe from Spanish bozal, a term used in slave trade and meaning "one who speaks Spanish poorly."
- After Bozo the Clown, a clown character very popular in the USA in the 1950s
- First used in USA English as a vocative, from Spanish vosotros = "you": compare Wikipedia:Buster#Etymology.
- After Anselm of Canterbury's usage of the early continental European Germanic-origin personal name Boso.