Where does “decadally” come from?

decadally (English) comes from English decadal, from English decade, from Middle English decade, from Middle French decade, from Latin decās, from Ancient Greek δεκάς, from Ancient Greek -ᾰ́ς, from Proto-Indo-European -ónts — sound, voice.

decadally (English): In a decadal manner; With respect to decades

Definitions

  1. In a decadal manner; With respect to decades

Ancestry of “decadally”, step by step

decadally traces back through two separate lines of ancestry.

via English decadal

StepLanguageWordMeaning
1EnglishdecadalOf or related to the number ten; Of or related to...
2EnglishdecadeA group, set, or series of ten, particularly
3Middle Englishdecade
4Middle Frenchdecadea series of 10 books
5Latindecāsa decade (period of ten years)
6Ancient Greekδεκάςthe number ten; a group of ten, decade
7Ancient Greek-ᾰ́ςgroup of
8Proto-Indo-European-óntsDerives nouns denoting body parts
9Hungarianöntto pour; to cast; accusative singular of ön
10Hungarianönyou
11Hungarianön-self-
12Turkishönfront
13Ottoman Turkishاوكvoice (of human or animal); sound
14Proto-Turkicǖnsound, voice

via English ly

StepLanguageWordMeaning
1EnglishlyAbbreviation of light-year
2VietnameselyAlternative spelling of li
Every word from Proto-Turkic ǖn