Where does “retroactivity” come from?

retroactivity (English) comes from English retroactive, from French rétroactif, from French actif, from Old French actif, from Latin āctīvus, from Ancient Greek ἐνεργητικός, from Ancient Greek ἐνεργέω, from Ancient Greek ἐνεργός — Creates collective nouns, which refer to groups...

retroactivity (English): The state or characteristic of being retroactive;...

Definitions

  1. The state or characteristic of being retroactive;...

Ancestry of “retroactivity”, step by step

StepLanguageWordMeaning
1EnglishretroactiveExtending in scope, effect, application or...
2Frenchrétroactifretroactive
3Frenchactifactive; asset; top
4Old Frenchactifactive
5Latināctīvusactive
6Ancient GreekἐνεργητικόςAble to act on; acting on; Active; In the active...
7Ancient Greekἐνεργέωto be in action or activity, to operate; to...
8Ancient Greekἐνεργόςat work, active
9Ancient Greekἐν-in, within; on
10Ancient Greekἐνin, on, at; among; in, at, or during the time of
11Ancient Greekδέρμαskin, hide
12Ancient Greekγλυφήcarving, carved work; hole cut
13Ancient Greek-ῐ́ᾱ{{l|en|-ia}}; "suffix forming abstract feminine...
14Proto-Indo-European-íh₂
15Proto-Indo-European-h₂Creates collective nouns, which refer to groups...

Words derived from “retroactivity

Every word from Proto-Indo-European -h₂