What do you call someone who is unimportant and presumptuous?

There isn't a single perfect word to describe someone who is unimportant and presumptuous, as it's a combination of traits. However, here are some options, depending on the specific nuance you want to convey:

For someone who is unimportant:

* Nobody: This emphasizes their lack of significance.

* Nonentity: This implies they are not worth considering.

* Nobody of consequence: This highlights their lack of influence or importance.

* Midget: (While this is a derogatory term for a person with dwarfism, it is sometimes used figuratively to mean someone insignificant.)

For someone who is presumptuous:

* Brash: This implies they are bold and overconfident.

* Arrogant: This suggests they have an exaggerated sense of their own importance.

* Snotty: This suggests they are dismissive and condescending.

* Pretentious: This implies they are trying to appear more important than they are.

Combining the two:

* Upstart: This refers to someone who has suddenly risen to a position of power or importance but is still considered unimportant.

* Upjumped: This is a similar term to "upstart," suggesting someone who is acting above their station.

* Parvenu: This describes someone who has recently acquired wealth or status but is considered to be lacking in refinement or good manners.

* Nobody with delusions of grandeur: This explicitly combines their lack of importance with their presumptuousness.

The best choice for you will depend on the specific situation and the level of formality you want to use.