Where does “teethless” come from?

teethless (English) comes from English teeth, from Middle English teth, from Old English tēþ, from Proto-Germanic tanþiz, from Proto-Indo-European h₃dóntes, from Proto-Indo-European h₃dónts, from Proto-Indo-European h₁ed- — to eat.

Ancestry of “teethless”, step by step

teethless traces back through two separate lines of ancestry.

via English teeth

StepLanguageWordMeaning
1Englishteethplural of tooth; API pl; The ability to be...
2Middle Englishtethplural of tothe
3Old Englishtēþ—
4Proto-Germanictanþiz—
5Proto-Indo-Europeanh₃dóntes—
6Proto-Indo-Europeanh₃dóntstooth
7Proto-Indo-Europeanh₁ed-to eat

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 Proto-Indo-European h₁ed- →Every word from Proto-Indo-European h₃dónts →Every word from Proto-Indo-European h₃dóntes →