GREENMAIL Antonyms There are 2 antonyms of the word greenmail. (opposite meanings)Did you mean?Definition of GREENMAILBest Opposite Words For GREENMAILTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1blackmailverb, nounv, n2extortionnounn Alternatives for BLACKMAIL Words (6)coercionextortionintimidationblackmailingblackjackpressureOpposite words for blackmail Alternatives for EXTORTION Words (7)blackmailcoercionextractionoppressionpressureshakedownsqueezingOpposite words for extortion