Undetermined
/ˌʌndɪˈtɜrmɪnd/
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Definition
(adj) Not determined; not settled; not decided.
Sentence Examples
The future of humanity remains undetermined, as it depends on it.
The cause of Dan's death was officially ruled as undetermined.
CEFR Practice Quiz
The cause of the fire is still ____, and the investigators are continuing to search for any new clues today.