How do you say 'Thank you' in French?

The French for thank-you is merci. (pronouced - mare-see)

Merci is a French equivalent of 'Thank you'. As an interjection, it means 'Thank you'. As a feminine gender noun, it takes 'la' ['the'] as its definite article, and means 'mercy'.

Thank you very much is 'merci beaucoup' (mer-sea bow-coo).
Thank you in frensh is "Merci"