Jamboree used in English, as a borrowed foreign word, with the ending -ree. The word Jamboree is a transitive verb with a direct action of the primary word Jambo. For example, an attendee of a Jambo is a Jamboree. The word "Jamboree" is used primarily by the Scouting program before the first Boy Scout "Jamboree" in 1920. The word has also come to mean "a lavish or boisterous celebration or party" outside of the Scouting program. Baden-Powell deliberately chose the name "Jamboree" where attendees were warmly welcomed attending this first Boy Scout rally or meeting with the word "Jambo!" Many, at
American Boy Scouts American Boy Scouts The American Boy Scouts (ABS), officially American Boy Scout then United States Boy Scouts, officially United States Boy Scout, was an early American Scouting organization formed by William Randolph Hearst in 1910, following on from the formation of the Scouting movement by Robert Baden-Powell between 1903 and 1907. Near the end of its existence, the organizations also used the names American Cadets and U.S. Junior Military Forces. The ABS was the rival of the Boy Scouts of America (BSA) similar to the situation in the United Kingdom with Baden Powell's Boy Scouts and the British Boys Scouts