Synonyms of inconclusive

2 Syllables
vague, lacking, open, clouded, weak-kneed, doubtful
3 Syllables
unsettled, deficient, astraddle, borderless, uncertain, ambiguous
4 Syllables
unfinished, unconvincing, illogical, multivocal, incomplete, polysemous, circumstantial, dubitable, uneventful, conditional, inexplicit, provisory, undecided, ambivalent, unfateful
5 Syllables
unstipulated, problematical, indecisive, codicillary
6 Syllables
unsatisfactory, indeterminate