STIFFENER Antonyms There are 9 antonyms of the word stiffener. (opposite meanings)Did you mean?Definition of STIFFENERSynonyms of STIFFENERAlso try opposite words for..stiffenstiffenedstiffeningBest Opposite Words For STIFFENERTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1flopverb, nounv, n2limberverb, adjectivev, adj3loosenverbv4relaxverbv5slackenverbv6softenverbv7unbendverbv8unbraceverbv9wiltverbv Alternatives for FLOP Words (10)dudbustcollapsefiascofizzleflopfounderrightturkeywashoutPhrases (3)fall flatfall throughfloating-point operationOpposite words for flop Alternatives for LIMBER Words (10)suppleagilebendablefleetflexiblelissomelithenimblepliablebendyPhrases (1)limber upOpposite words for limber Alternatives for LOOSEN Words (13)relaxundoreleaseunfastenuntieslackenunbindunlooseunlatcheaseliberatelooseteasePhrases (4)let output outset freetease apartOpposite words for loosen Alternatives for RELAX Words (9)loosenunbendunwinddecompresslooseslackslackenunlaxunstrainPhrases (4)loosen upmake relaxedslack upslow downOpposite words for relax Alternatives for SLACKEN Words (4)slackrelaxremitslowPhrases (3)slack upslow downslow upOpposite words for slacken Alternatives for SOFTEN Words (25)cushionallayalleviateappeaseassuagecalmdulcifyeaselightenmitigatemollifypacifyrelaxrelievesoothetemperbreakbufferdampdampenmincemoderaterelentweakenyieldOpposite words for soften Alternatives for UNBEND Words (10)relaxunwindeaseloosenreleaseslackensoftenunclenchdecompressstraightenPhrases (3)let goloosen upslow downOpposite words for unbend Alternatives for UNBRACE Words (9)untiereleaseunboltunclaspundounfastenunhookunlockunlaceOpposite words for unbrace