What does pessimize mean?

Make worse

Pessimize combines pessim- (the root of words like pessimist and pessimistic) with -ize to create optimize's opposite. So, just as optimize means "to make better or more efficient," pessimize means "to make worse or less efficient."

Because most people don't seek to pessimize things, you're most likely to see pessimize used as a diss, after someone accidentally makes something worse. For example, if a software update makes users' iPhones run slower, you might see a user post "Wow, this new update has really pessimized the iPhone" to social media.


Good going, Greg. You've really pessimized this process
I'm sorry! We'll just do it the old way next time

Pessimists believe things can always be pessimized

Related Slang


Updated September 14, 2023

Pessimize definition by

This page explains what the slang term "Pessimize" means. The definition, example, and related terms listed above have been written and compiled by the team.

We are constantly updating our database with new slang terms, acronyms, and abbreviations. If you would like to suggest a term or an update to an existing one, please let us know!