A synonym for every five years is quinquennial: as an adjective describes something that happens every five years or that lasts for five years; the noun means the fifth anniversary or a period of five years.
Every 150 years a sesquicentennial occurs.
It should be 'occurs' and the answer is the letter M.
The adjective "biennial" means done or occurring every 2 years. (biannual means twice a year)
It is spelled right (biennial) and means something that happens every two years. Example- a flower blooming every two years.
Biannual can be used in a sentence as an adjective to denote an event that occurs twice a year, or every two years. So, "It's a biannual event" is a rather ambiguous statement.
it is a a centry
Biannual
Something that happens every 100 years is called a centennial. It marks a significant milestone or anniversary reaching the 100-year mark.
its tyler m
Quinquennial = something that happens every 5 years. Lustral = also something that happens every 5 years or we could invent: semi-Decennial: where semi is half and Deccennial happens every 10 years.
Every 4 years
The letter "m" :DOnce in a minute, twice in a moment, and never in a thousand years.
Every number divisible by four. Seriously.
"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.
An event that occurs once every three years.
Something that is octennial occurs every eight years. Octennial can also mean something having to do with eight years. Oct means eight (like octopus, octogon) and enial means years (centenial, perenial)
every two years