Not accurately determined or determinable. / Imprecise or vague.

(algebra, strict sense) A symbol that resembles a variable or parameter but is used purely formally and neither signifies nor is ever assigned a particular value; / (loose sense) a variable.

plural of indeterminate

In an indeterminate manner.

The quality of being indeterminate.

Lack of determination; an unsettled or wavering state, as of the mind. / Lack of fixed or stated direction.

not accurately determined or determinable / imprecise or vague

(mathematics) A variable with no value assigned to it; for example the variables in a polynomial.

(ethics, religion, uncountable) The doctrine that all human actions are not so much determined by the preceding events, conditions, causes or karma as by deliberate choice or free will.

in an indeterminable manner