what is something occurring every four years called
RE: A word for &quot;every four years&quot;? If biannual is every two years, is there a word for an event occurring every four years?est Answer: Annual - 1 year Biennial - 2 years Triennial - 3 years Quadrennial - 4 years Quinquennial - 5 years Sexennial - 6 years Septennial - 7 years Octennial - 8 years Novennial - 9 years Decennial - 10 years Good luck, hope this helps.