Fail
Mess up
Mess up verb - Make a mess of, destroy or ruin.
Both terms in one sentence
- The Trolls always maintain that the kid protagonists are doomed to fail and mess up their session so badly that it retroactively broke the Trolls' as well.
- Paranoia gives certain NPCs "GM fiat armor" as shorthand for "beating this guy would really mess up the plot, so whatever the PCs try, contrive some excuse for it to fail".
Source: Contractual Boss Immunity -
When the come up with plans that would mess up Robotnik... they still fail.
Cite this Source
Mess up and Fail. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/fail/mess_up
Fail & Mess up. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/fail/mess_up>.
Mess up or Fail. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/fail/mess_up.
Google Ngram Viewer shows how "fail" and "mess up" have occurred on timeline