When an i use the word ultracrepidarian?

You would use the word "ultracrepidarian" when you want to describe someone who gives opinions or advice on matters outside their area of expertise. It implies a lack of knowledge or understanding about the subject they are discussing.

Here are some examples of how you might use "ultracrepidarian":

* "The ultracrepidarian politician offered unsolicited advice on financial policy, despite having no economic background."

* "My ultracrepidarian neighbor insists on giving me gardening tips, even though his plants are all dying."

* "The article criticized the ultracrepidarian pronouncements of the celebrity chef, who had no culinary training."

The word "ultracrepidarian" is quite formal and uncommon in everyday conversation. It is more often used in writing and in formal speeches.