cautionary
adj.describing a warning that tells you to be careful or to avoid a mistake. You use this to describe a story or a piece of advice that is meant to teach you a lesson.
adj.serving as a warning or a lesson to be careful. Often used to describe a narrative or statement intended to prevent future errors.
“The story has a cautionary ending.”
“The report provides a cautionary tale about the risks of ignoring early signs of financial instability.”
“The author's cautionary tone suggests that while the initial success of the project was impressive, the long-term consequences were far more complex than the public realized.”
Usage cautionary tale
“As a cautionary tale, CloudSEK said that Trivy developers rotated but failed to fully revoke an automation token over a 20-day window.”
“For government revenue, the 1980 experience is a cautionary tale: Projections built on current prices tend to overstate what a tax will collect.”