Not to do nothing
Because of a 72 year rule, the decennial census of 1790 would have been published in 1862.
decennial Occurring every ten (10) years. Also tenth anniversary
It is a decennial.
"Decentennial" is not a recognized English word. It may be a misspelling or a made-up term. If you meant "decennial," it refers to something that occurs once every ten years.
Decennial
Why does the goverment have a census?
Passover
Honor the African tradition of harvest festivals.
As decennial relates to a ten year period, it has no antonym.
Do you use commas to off set the phrase as well as
Century is to Centennial as Decade is to Decennial.
A 10 year anniversary is called a decennial.