French, fromsolitaire, adjective, solitary, from Latinsolitarius
circa 1727, in the meaning defined atsense 1
“Solitaire.”Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/solitaire. Accessed 15 Apr. 2025.
solitaire
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Merriam-Webster unabridged