Antonyms of adj undecided

3 senses of undecided

Sense 1
open, undecided, undetermined, unresolved -- (not brought to a conclusion; subject to further thought; "an open question"; "our position on this bill is still undecided"; "our lawsuit is still undetermined")

INDIRECT (VIA unsettled) -> settled -- (established or decided beyond dispute or doubt; "with details of the wedding settled she could now sleep at night")

Sense 2
on the fence (predicate), undecided -- (characterized by indecision; "some who had been on the fence came out in favor of the plan"; "too many voters still declare they are undecided")

INDIRECT (VIA indecisive) -> decisive -- (characterized by decision and firmness; "an able and decisive young woman"; "we needed decisive leadership"; "she gave him a decisive answer")

Sense 3
undecided -- (not yet having made a commitment; "undecided voters")

INDIRECT (VIA uncommitted) -> committed -- (bound or obligated, as under a pledge to a particular cause, action, or attitude; "committed church members"; "a committed Marxist")

Similarity of adj undecided

3 senses of undecided

Sense 1
open, undecided, undetermined, unresolved -- (not brought to a conclusion; subject to further thought; "an open question"; "our position on this bill is still undecided"; "our lawsuit is still undetermined")
       => unsettled (vs. settled) -- (still in doubt; "an unsettled issue"; "an unsettled state of mind")

Sense 2
on the fence (predicate), undecided -- (characterized by indecision; "some who had been on the fence came out in favor of the plan"; "too many voters still declare they are undecided")
       => indecisive (vs. decisive) -- (characterized by lack of decision and firmness; "an indecisive manager brought the enterprise to a standstill")

Sense 3
undecided -- (not yet having made a commitment; "undecided voters")
       => uncommitted (vs. committed) -- (not bound or pledged)