The correct spelling is "solitaire", but there are a number of common misspellings of the word, including:
- solitare
- solatare
- solataire
- solitarie
- soltiare
- solotaire
- soltaire
- solitaaire
- solitiare
- soltair
- solitair
Incidentally, "solitaire" is the word used in the United States, but other parts of the world have their own names, including "patience" in England and much of Europe, "solitario" in Spanish-speaking countries, "Solitär" (or "solitaer") in German, "réussite" in French, and "kabal" or "kabala" elsewhere.