adj. 1 not fixed in extent, character, etc. 2 left doubtful; vague. 3 Math. (of a quantity) not limited to a fixed value by the value of another quantity. 4 (of a judicial sentence) such that the convicted person's conduct determines the date of release. indeterminate vowel the obscure vowel heard in ' a mom ent ago'; a schwa. indeterminacy n. indeterminately adv. indeterminateness n.
[ ME f. LL indeterminatus (as IN-(1), DETERMINATE) ]