undeterminable
un·de·ter·minable
adjective
1.
not capable of being definitely decided or ascertained
Origin
From un- + determine + -able.
Related words
See also
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.