Where does “brissed” come from?

brissed (Old Irish) comes from Old Irish brisid, from Old Irish bres, from Proto-Celtic brestā, from Proto-Indo-European bʰres‑ — to burst; break; crack; crackle.

Ancestry of “brissed”, step by step

StepLanguageWordMeaning
1Old Irishbrisidto break, to smash; to defeat
2Old Irishbresfight, combat
3Proto-Celticbrestāfight
4Proto-Indo-Europeanbʰres‑to burst; break; crack; crackle
Every word from Proto-Indo-European bʰres‑ →Every word from Proto-Celtic brestā →Every word from Old Irish bres →