• foucualt,
• foucalt,
• foottault,
• doucault,
• coucault,
• voucault,
• goucault,
• toucault,
• roucault,
• fiucault,
• fkucault,
• flucault,
• fpucault,
• foucaulty,
• focault,
• footahlt,
• forccut,
• Foucasse,
• Fautfault,
• Roucayle

The adjective form of the word "Foucault" is "Foucauldian".

The plural form of the word "foucault" is "foucaults".

The singular form of the word "Foucault" is "Foucault". Foucault is a proper noun, so it remains the same in both singular and plural forms.