Precarious means:
* Uncertain: Something that is precarious is not stable or secure, and could easily become dangerous or unfavorable.
* Risky: A precarious situation is one where there is a high risk of failure or harm.
* Unstable: A precarious situation is one that is likely to change quickly, often for the worse.
Examples:
* "The old bridge was in a precarious state of repair."
* "Their financial situation was precarious."
* "He made a precarious climb up the mountain."
Note: "Precarious" is often used to describe situations that are uncertain or dangerous.