Indeterminable

In′de‐ter″mi‐na‐ble (?), a. [L. indeterminabilis: cf. F. indéterminable. See In- not, and Determine.] Not determinable; impossible to be determined; not to be definitely known, ascertained, defined, or limited. — In′de‐ter″mi‐na‐bly, adv.