How do you say Mr McGregor in French from the story peter rabit?

The most accurate translation of "Mr. McGregor" in French would be Monsieur McGregor.

However, depending on the context and the specific nuances of the story, you could also use other variations, such as:

* Monsieur Mc Gregor: This highlights the surname more prominently.

* Le monsieur McGregor: This emphasizes the fact that he is the specific Mr. McGregor.

Ultimately, the best translation depends on the specific situation and the desired emphasis.