- undetermined - not yet having been ascertained or determined; "of undetermined species"
Antonyms: determined, ascertained, discovered, observed
- indeterminate, undetermined - not precisely determined or established; not fixed or known in advance; "of indeterminate age"; "a zillion is a large indeterminate number"; "an indeterminate point of law"; "the influence of environment is indeterminate"; "an indeterminate future"
- 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"
Antonym: settled (indirect, via unsettled)