1. Affluents
2. Feeders
3. Subsidiaries
4. Substreams
5. Subtributaries
6. Feeder streams
7. Contributories
8. Streamlets
9. Rills
10. Branches
11. Streams
12. Tributary streams
13. Inflows
14. Subsidiary streams
15. Confluents
16. Drainage systems
17. Tributaries
18. Streams of water
19. Feeding streams
20. Stream beds
21. Watercourses
22. Feeders of rivers
23. Subterranean streams
24. Feeding brooks
25. River branches
26. Streams of liquid
27. Waterways
28. Tributary creeks
29. Secondary streams
30. Affluent streams

Searching for the best ideas for synonyms for the word “tributaries”? Look no further! There are many different words that can be used as synonyms for “tributaries”, including affluents, feeders, subsidiaries, substreams, subtributaries, feeder streams, contributories, streamlets, rills, branches, streams, tributary streams, inflows, subsidiary streams, confluents, drainage systems, streams of water, feeding streams, stream beds, watercourses, feeders of rivers, subterranean streams, feeding brooks, river branches, streams of liquid, waterways, tributary creeks, secondary streams, and affluent streams. With this comprehensive list of synonyms, you’ll never be at a loss for words when discussing tributaries.