Monsieur, which is shortened to M.
Monsieur
Il n'y a une problème, Monsieur. --or-- Aucun Monsieur de problème
The French equivalent of mister is monsieur, which is abbreviated M. (including a period). Note: The abbreviations Mme (madame) and Mlle (mademoiselle) do not use periods because they end with the...
monsieur tu est le problème!