unknown quantity

1.
international (English)neutralgeneral
- A person or thing whose abilities, character, or impact are not yet known or are unpredictable.
- An element whose nature or effect cannot be readily determined or anticipated.
2.
international (English)neutralformal
- An unspecified or indeterminate amount whose value is not known.
- In technical or mathematical contexts, a variable or value that has not been determined.

Examples:

No examples available.