indeterminable

About 0.11 uses per million words.

Meaning

1. adjective That is incapable of being measured.
2. adjective That is incapable of being ascertained.
3. noun An indeterminable thing or quantity.

Similar words

undeterminable indeterminate unascertainable incalculable undiscoverable unpredictable indeterminant unmeasurable immeasurable ungaugable

Often followed by

number and as in amount age time period by

Word family

indeterminably