Definify.com

Webster 1913 Edition

Verb.

[1st pref.

un-

vote

To reverse or annul by vote, as a former vote.

[R.]

Bp, Burnet.

Verb.

To contravene by vote a former vote; to annul a former vote.

unvote ‎(third-person singular simple present unvotes, present participle unvoting, simple past and past participle unvoted)