distributary

English Thesaurus

1. a branch of a river that flows away from the main stream and does not rejoin it (noun.object)

hypernym	:	branch,
definition	:	a stream or river connected to a larger one (noun.object)

antonym	:	affluent, confluent, feeder, tributary,
definition	:	a branch that flows into the main stream (noun.object)

antonym	:	affluent, confluent, feeder, tributary,
definition	:	a branch that flows into the main stream (noun.object)