DOWNRIVER Antonyms There are 2 antonyms of the word downriver. (opposite meanings)Did you mean?Definition of DOWNRIVERBest Opposite Words For DOWNRIVERTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb Expand?WordSave?Synonyms..UsageTypeupriveradverb, adjectiveadv, adjadverb • toward the source or against the currentupstreamadverb, adjectiveadv, adjadjective • in the direction against a stream's currentadverb • toward the source or against the current Alternatives for UPRIVER Words (4)upstreamaboveaheadinlandOpposite words for upriver Alternatives for UPSTREAM Words (1)upriverOpposite words for upstream