BIFACE Antonyms There are 2 antonyms of the word biface. (opposite meanings)Did you mean?Definition of BIFACEBest Opposite Words For BIFACETop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1unifacialadjectiveadj2unifacenounn Alternatives for UNIFACIAL Words (1)one-sidedOpposite words for unifacial