conjectural
US /kənˈdʒek.tʃɚ.əl/
UK /kənˈdʒek.tʃɚ.əl/
1.
based on or involving conjecture; speculative.
:
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The report contained many conjectural statements about the future.
•
His theory remains highly conjectural without further evidence.
based on or involving conjecture; speculative.