Middle English graundam, from Anglo-French graund dame, literally, great lady
13th century, in the meaning defined at sense 1a
“Grandam.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/grandam. Accessed 11 Dec. 2023.
Thesaurus: All synonyms and antonyms for grandam
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