undecided

adjective

1 her father's fate was still undecided:

unresolved, yet to be decided, uncertain, unsure, unclear, unsettled, indefinite;

undetermined, indeterminate, unknown, unestablished, unascertained, pending, outstanding, in the balance, up in the air, debatable, arguable, disputable, moot, problematic, controversial, open to question, open to doubt, open, doubtful, dubious, borderline, ambiguous, vague;

informal iffy, on the back burner, on ice;

British, informal dodgy.

▷antonyms decided, sealed.

2 they remained undecided as to the precise role for the EC:

unsure, uncertain, doubtful, dubious, unresolved, indecisive, irresolute, hesitant, tentative, wavering, vacillating, oscillating, equivocating, dithering, uncommitted, floating, shilly-shallying, wobbling, vague, hazy, unclear, ambivalent, in two minds, torn, split;

in a quandary, in a dilemma, on the horns of a dilemma, in doubt;

informal iffy, blowing hot and cold, on the fence.

▷antonyms certain.

undecided Oxford Dictionary of English