| Subject | English | Ukrainian |
| gen. | ad lib | експромтом (говорити bojana) |
| gen. | ad lib | спонтанний (текст, виступ bojana) |
| gen. | ad lib | експромт (speak or perform in public without previously preparing one's words • The actor ad-libbed the line "Ah... Houston, we have a problem" when he discovered that the gun was gone. bojana) |
| gen. | ad lib | без підготовки (говорити bojana) |
| gen. | ad lib | імпровізація (speak or perform in public without previously preparing one's words • The actor ad-libbed the line "Ah... Houston, we have a problem" when he discovered that the gun was gone. bojana) |
| gen. | ad lib | непідготовлений (текст, виступ bojana) |
| gen. | ad lib | імпровізувати (speak or perform in public without previously preparing one's words • The actor ad-libbed the line "Ah... Houston, we have a problem" when he discovered that the gun was gone. bojana) |
| gen. | lib-erate | відпускати на волю |