a toss-up
noun
Meaning
A situation in which two outcomes or choices are equally likely, making it impossible to predict the result with certainty.
Examples
- Whether the company should expand to Europe or Asia remains a toss-up for the board of directors.
- The election is currently a toss-up, with both candidates polling within the margin of error.
Synonyms: uncertain, a close call, a dead heat, a coin flip