| Subject | English | Russian |
| gen. | keep a fast | соблюдать пост (Sundays, rites, etc., и т.д.) |
| gen. | keep a fast | поститься |
| gen. | keep the fast for a certain time | пропоститься |
| inf. | keep the fast for a while | попоститься |
| gen. | someone who does not keep a fast | скоромник (Anglophile) |