Antonyms of adj preconcerted

1 sense of preconcerted

Sense 1
preconcerted -- (previously arranged or agreed on; "following preconcerted plans")

INDIRECT (VIA settled) -> unsettled -- (still in doubt; "an unsettled issue"; "an unsettled state of mind")

Similarity of adj preconcerted

1 sense of preconcerted

Sense 1
preconcerted -- (previously arranged or agreed on; "following preconcerted plans")
       => settled (vs. unsettled) -- (established or decided beyond dispute or doubt; "with details of the wedding settled she could now sleep at night")