etymonline.com
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Online Etymology Dictionary is a comprehensive, searchable resource that traces the origins and historical development of English words, detailing word roots across languages (Old English, Latin, Greek, etc.) with concise etymologies.
More resources on Historical Linguistics
The Linguist List
Resources and archives for historical linguistics
Wiktionary
Free dictionary with proto-language reconstructions
Etymonline
Online etymology dictionary for historical word origins
The History of English
A chronological history of the English language examined through the lens of historical events that shaped the development and spread of the language from the Eurasian steppe to the entire world.
The Great
A podcast for all lovers of America
historically.org
Historically.org is a resource hub for historical linguistics, featuring guides on language-change methods, bibliographies, and curated links to datasets, archives, and related projects.