Louse up
Louse up verb - To make a mistake.
Usage example: everything is riding on this project, so we can't afford to louse up
Mess
Mess verb - To interest oneself in what is not one's concern.
Cite this Source
Mess and Louse up. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/louse_up/mess
Louse up & Mess. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/louse_up/mess>.
Mess or Louse up. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/louse_up/mess.
Google Ngram Viewer shows how "louse up" and "mess" have occurred on timeline