Where does “assbutt” come from?

assbutt (English) comes from English butt, from Middle English butten, from Anglo-Norman buter, from Old French boter, from Old French bouter, from Frankish bautan, from Proto-West Germanic bautan, from Proto-Germanic bautaną — to grow, swell; to swell, wax, grow; to blow; to...

Ancestry of “assbutt”, step by step

assbutt traces back through two separate lines of ancestry.

via English butt

StepLanguageWordMeaning
1EnglishbuttThe larger or thicker end of something; the blunt...
2Middle Englishbutten
3Anglo-Normanbuterto strike, finish
4Old Frenchboterto push, butt, strike; to strike; to push; thrust
5Old Frenchbouterto strike; to hit; to place; to put; to enter
6Frankishbautanto push, strike, beat; to hit, strike; to hit,...
7Proto-West Germanicbautanto beat
8Proto-Germanicbautanąto beat, push
9Proto-Indo-Europeanbʰewd-to hit, strike; to beat, push; to strike, push,...
10Proto-Indo-Europeanbʰew-to grow, swell; to swell, wax, grow; to blow; to...

via English ass

StepLanguageWordMeaning
1EnglishassAny of several species of horse-like animals,...
2Middle EnglishasseAlternative form of axen
3Old Englishassaass, donkey
4Old Englishassenshe-ass
5Latinasinusa donkey, an ass; an ass, an idiot, a dolt, a...
6Latinacinusa berry, especially the grape; the seed of a...
7Latinaciessharp edge or point; battle line; battle,...
8Proto-Indo-Europeanh₂eḱ-sharp
Every word from Proto-Indo-European bʰew-Every word from Proto-Indo-European bʰewd-Every word from Proto-Germanic bautaną