Synonyms of tributory

1 Syllable
branch
2 Syllables
lesser, aiding, subject, brancher, minor, backup
3 Syllables
assistant, adjuvant, assisting, subservient, useful
4 Syllables
collateral, ancillary, auxiliary, supplemental, subsidiary, accessory, serviceable, appurtenant
5 Syllables
cooperative, subordinate, contributory, supplementary