Where does “Burgþryþ” come from?

Burgþryþ (Old English) comes from Old English þryþ, from Proto-Germanic þrūþiz, from Proto-Germanic -þiz, from Proto-Indo-European -tis — Derives abstract/action nouns from verb roots.

Ancestry of “Burgþryþ”, step by step

Burgþryþ traces back through two separate lines of ancestry.

via Old English þryþ

StepLanguageWordMeaning
1Old Englishþryþstrength, power, force
2Proto-Germanicþrūþizstrength
3Proto-Germanic-þizForms abstract nouns from verb roots, usually...
4Proto-Indo-European-tisDerives abstract/action nouns from verb roots

via Old English burg

StepLanguageWordMeaning
1Old Englishburgcity; town; a fortified place: stronghold, fort,...
2Proto-Germanicburgzfortification, stronghold; city
3Proto-Indo-Europeanbʰr̥ǵʰ-—
Every word from Proto-Indo-European -tis →Every word from Proto-Germanic -þiz →Every word from Proto-Germanic þrūþiz →
Burgþryþ — Etymology, Origin & Word History | Etymology Explorer