not precisely determined or established; not fixed or known in advance | not established beyond doubt; still undecided or unknown |
having a capacity for continuing to grow at the apex | lacking or indicating lack of confidence or assurance |
of uncertain or ambiguous nature | not certain to occur; not inevitable |
not leading to a definite ending or result | not established or confirmed |
(of a quantity) having no definite value, as an equation that cannot be solved | ambiguous (especially in the negative) |
| not consistent or dependable |
| subject to change |