出典:Wiktionary
出典:『Wiktionary』 (2026/02/25 19:38 UTC 版)
Inherited from 古期英語 þunor, from Proto-West Germanic *þunr.
The varieties with -d- are from the oblique stem of þunor, þunr-, which experienced a sound change -nr- → -ndr-; this was leveled into all forms of the word (compare gandre).
thonder (plural thondres)