Synonyms for Oral (same or very similar meaning)
WordNet sense 1 (an examination conducted by word of mouth):
viva, viva voce, oral exam, oral examinationWordNet sense 2 (using speech rather than writing):
unwrittenWordNet sense 3 (uttered through the medium of speech or characterized by speech; sometimes used in combination):
spokenFrom the ODE community, based on WordNetadd/edit