EFF Antonyms There are 9 antonyms of the word eff. (opposite meanings)Did you mean?Definition of EFFBest Opposite Words For EFFTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1blunderverb, nounv, n2botchverb, nounv, n3failverb, nounv, n4falterverbv5flopverb, nounv, n6flounderverb, nounv, n7fumbleverb, nounv, n8loseverbv9stumbleverb, nounv, n Alternatives for BLUNDER Words (24)blooperflubfumblegoofbotcherrorgaffemistakeslipstumbleblundermiscalculationmisstepmix-upoversightboo-boobloomerblurtbungleflufffoul-uplapsepratfallsinPhrases (4)blunder outblurt outdrop the ballfaux pasOpposite words for blunder Alternatives for BOTCH Words (18)bunglespoilbodgedestroyflubruinbloomerblooperblunderbobblebollixboo-boobumbleflufffoul-upfumblemishandlepratfallPhrases (6)ball upbollix upbotch uplouse upmuck upscrew upOpposite words for botch Alternatives for FAIL Words (8)flunkbetraybombbreakdiegomiscarryneglectPhrases (8)give outbreak downconk outflush itgive waygo badgo wrongrun outOpposite words for fail Alternatives for FALTER Words (12)waverstumbleditherfalterfluctuatehesitatevacillatebumblefalteringhesitationstammerstutterOpposite words for falter Alternatives for FLOP Words (10)dudbustcollapsefiascofizzleflopfounderrightturkeywashoutPhrases (3)fall flatfall throughfloating-point operationOpposite words for flop Alternatives for FLOUNDER Words (10)staggerblunderditherfalterfumblehesitatemuddlestrugglestumblewaverOpposite words for flounder Alternatives for FUMBLE Words (19)blunderbotchbunglemishandleflounderfumblemismanagemuddlestrugglestumblebobblebodgebollixbumbleflubfluffpokespoilgrubblePhrases (6)ball upbollix upbotch uplouse upmuck upscrew upOpposite words for fumble Alternatives for LOSE Words (9)ditchdropdumpforfeitjettisonmislaymissshedsufferPhrases (3)get rid ofleave behindturn a lossOpposite words for lose