viva voce

By word of mouth: a report submitted viva voce; a viva voce examination.

[Medieval Latin vīvā vōce, with the living voice : Latin vīvā, feminine ablative sing. of vīvus, living + Latin vōce, ablative of vōx, voice.]

[Latin, With the living voice; by word of mouth.] Verbally; orally.

When applied to the examination of witnesses, the term viva voce means oral testimony as opposed to testimony contained in depositions or affidavits.

Viva voce voting is voting by speech, as distinguished from voting by a written or printed ballot.

The adjective has one meaning:

Meaning #1: expressed orally
  Synonym: word-of-mouth