NONVENOUS Antonyms There are 2 antonyms of the word nonvenous. (opposite meanings)Did you mean?Definition of NONVENOUSBest Opposite Words For NONVENOUSTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1arterialadjectiveadj2venousadjectiveadj