Where does “inertial” come from?

Inertial derives from English inertia, from Latin iners meaning sluggish or inactive, formed from Latin in- and Latin in, ultimately from Proto-Indo-European ne and h₁én.

inertial (English): Of, relating to, or depending on inertia

Definitions

  1. Of, relating to, or depending on inertia

Ancestry of “inertial”, step by step

inertial traces back through two separate lines of ancestry.

via Romanian inerție

StepLanguageWordMeaning
1Romanianinerțieinertia; inertia, idleness, sloth
2Frenchinertieinertia; lack of dynamism or forcefulness
3Latininertiawant of art or skill, unskillfulness, ignorance;...
4Latininerswithout skill, unskilled, unskillful,...
5Latinīn-un-, non-, not
6Latinînin, at, on, upon, from (space)
7Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
8Proto-Italicenin
9Proto-Indo-Europeanh₁énin

via English inertia

StepLanguageWordMeaning
1EnglishinertiaThe property of a body that resists any change to...

Words derived from “inertial

Every word from Proto-Indo-European h₁énEvery word from Latin īn-Every word from Proto-Italic en
inertial — Etymology, Origin & Word History | Etymology Explorer