Where does “decennially” come from?

decennially (English) comes from English decennial, from Latin decennialis, from Latin -ennium, from Latin -ennis, from Latin annus, from Proto-Italic atnos, from Proto-Indo-European h₂et-no-, from Proto-Indo-European h₂et- — grass.

decennially (English): Every ten years

Definitions

  1. Every ten years

Ancestry of “decennially”, step by step

decennially traces back through two separate lines of ancestry.

via English decennial

StepLanguageWordMeaning
1EnglishdecennialThe tenth anniversary of an event or happening;...
2Latindecennialis—
3Latin-enniumforming periods of years
4Latin-ennis—
5Latinannusyear; time; season
6Proto-Italicatnosyear
7Proto-Indo-Europeanh₂et-no-—
8Proto-Indo-Europeanh₂et-grass

via English ly

StepLanguageWordMeaning
1EnglishlyAbbreviation of light-year
2VietnameselyAlternative spelling of li
Every word from Proto-Indo-European h₂et- →