conjectural Play adjectiveBased on or involving conjecture. SYNONYMS abstractacademicassumedbased on guessworkgroundlesshypotheticalideationalinferrednotionalpostulatedpostulationalpresumedpresupposedputativespeculativesuppositionalsuppositioussuppositivesuspectedtentativetheoreticalunfoundedunprovenunsubstantiateduntested