The correct spelling is decathlon.
A decathlon :)
The word decathlon does not have an antonym.
Intellectual Decathlon happened in 1984.
Intellectual Decathlon was created in 1984.
Olympic Decathlon was created in 1980.
Olympic Decathlon happened in 1981.
The Last Decathlon was created in 1980.
Decathlon Group was created in 1976.
The Activision Decathlon happened in 1983.
A decathlon is very hard to complete.
Jody, a user on WikiAnswers, decided to enter a decathlon.