not having official authority or sanction
a sort of unofficial mayor
an unofficial estimate
he participated in an unofficial capacity
not officially established
the early election returns are unofficial
The following are synonyms for 'unofficial'. Click on any of them to get both Bibliodata's full list of common definitions and a further set of synonyms.
More than 3000 years ago children played with circular hoops made with grape vines. This toy was swung around the waist. Years later this toy was made by company called Wham-O and the Hula-Hoop was invented in 1958.