Here are some synonyms for the word "river": 1. Stream 2. Brook 3. Creek 4. Tributary 5. Waterway 6. Channel 7. Estuary 8. Flow 9. Current 10. Watercourse Note that some of these words may have slightly different connotations or nuances, but they all generally refer to a natural flow of water. Additionally, here are some more poetic or literary synonyms: 1. Torrent 2. Cascade 3. Rapids 4. Flood 5. Deluge These words often evoke a sense of power, movement, or drama, and can add depth and richness to descriptive writing.