INFECTIOUS AGENT Antonyms There are 2 antonyms of the phrase infectious agent. (opposite meanings)Did you mean?Definition of INFECTIOUS AGENTSynonyms of INFECTIOUS AGENTAlso try opposite words for..agentinfectBest Opposite Words For INFECTIOUS AGENTTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1harmlessadjectiveadj2sterileadjectiveadj Alternatives for HARMLESS Words (16)benigninnocentgentleinconsequentialinconspicuousinoffensiveinsignificantmildpeaceableplacidsafetameunobjectionableunremarkableunoffensiveinnocuousOpposite words for harmless Alternatives for STERILE Words (11)infertileasepticbarrencleanpureunfruitfulunproductiveunfertileunimaginativeuninspireduninventiveOpposite words for sterile