unvoluntary

From un- +‎ voluntary.

unvoluntary (comparative more unvoluntary, superlative most unvoluntary)

1. (obsolete) Involuntary.
   • 1655, Thomas Fuller, “I. Century”, in The Church-history of Britain; […], London: […] Iohn Williams […], →OCLC, (please specify |book=I to XI), page 2:

     […] may their Mistake herein be as freely forgiven them, as I hope and desire that the Charitable Reader will with his Pardon meet those unvoluntary Errours, which in this Work by me shall be committed.