The story
- Proto-Germanic · derived from*bautaną“to push”
- Frankish · derived from*bôtan
- Old French · derived fromars bouterez
- English todaybuttress
From Old French ars bouterez (noun, literally “supporting arcs”), from bouterez (adjective), oblique plural of bouteret (rare in the singular), from Frankish *bôtan, from Proto-Germanic *bautaną (“to push”). Ultimately cognate with beat.
Words from the same roots
Proto-Germanic*bautaną all →
buttbossemboss
Etymology from Wiktionary, CC BY-SA 4.0.