Where does “extentless” come from?

extentless (English) comes from English extent, from Middle English extente, from Old French estente, from Old French estendre, from Latin extendere, from Latin extendo, from Latin ex-, from Latin e.

Ancestry of “extentless”, step by step

extentless traces back through two separate lines of ancestry.

via English extent

StepLanguageWordMeaning
1EnglishextentA range of values or locations; The space, area,...
2Middle Englishextente
3Old Frenchestentevaluation of land, stretch of land
4Old Frenchestendreto stretch, extend or spread
5Latinextenderethird-person plural perfect active indicative of...
6LatinextendoI stretch or thrust out; I extend, prolong or...
7Latinex-out, away; throughout; thoroughly
8LatineThe name of the letter "E"; out of, from
9LatinexA name of the letter "X"; out of, from
10Latincommūnicōto impart, share
11Latincommūniscommon, commonplace, ordinary, general, universal, shared, shared alike, of both sides, belonging to two or more together
12Old Latincom(m)oinis
13Proto-Italickommoiniscommon
14Proto-Indo-Europeanḱom-moy-ni-held in common
15Proto-Indo-Europeanḱómbeside, near, by, with
16Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
17Middle Englishkyt

via English less

StepLanguageWordMeaning
1EnglishlessTo a smaller extent or degree; comparative form...
2Middle Englishlesfalse; lying; deceptive; falsehood; a lie
3Old Englishlēasfalse, lax; false, void, loose; devoid of, loose...
4Proto-Germanic*laus
Every word from Middle English kyt