quinquennial
Every five years
Quinquennial means occurring every five years or lasting five years.
A quinquennial review happens on a five-year cycle; a quinquennial plan spans five years.
The word appears in formal or administrative contexts: The committee conducts quinquennial assessments of the program.
As a noun, a quinquennial is a fifth anniversary or a five-year event.
Spanning sixty months
- lustrumFive-year span
- quadrennialEvery four years
- decennialEvery ten years
- cyclicalRepeating in rounds
recurrent · interval · recurring · periodic · regular · scheduled · term · cycle
Special anniversary observance
- commemorationAct of honoring memory
- celebrationFestive event marking occasion
- ceremonyFormal event marking occasions
- observanceKeeping of customs
landmark · benchmark · recognition · tribute · memorial · festivity · gala · convocation
Group of five
- quintupleMultiply by five
- pentagonFive-sided closed figure
- pentadA group of five
- quintupletsFive offspring, one birth
pentathlon · pentagram · fifth · fivefold · pentameter
five-year
Spanning sixty months
- lustrumFive-year span
- quadrennialEvery four years
- decennialEvery ten years
cyclical · recurrent · interval · recurring · periodic · regular · scheduled · term · cycle · rotation
jubilee
Special anniversary observance
- commemorationAct of honoring memory
- celebrationFestive event marking occasion
- ceremonyFormal event marking occasions
observance · landmark · benchmark · recognition · tribute · memorial · festivity · gala · convocation · reunion
quintet
Group of five
quintuplets · pentathlon · pentagram · fifth · fivefold · pentameter
annual, perennial, anniversary, annually, centennial, biennial, millennial, triennial, septennial