SMOOTHEN Antonyms There are 5 antonyms of the word smoothen. (opposite meanings)Did you mean?Definition of SMOOTHENSynonyms of SMOOTHENAlso try opposite words for..smoothedsmoothersmoothestsmoothingBest Opposite Words For SMOOTHENTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1coarsenverbv2hardenverbv3roughenverbv4worsenverbv5wrinkleverb, nounv, n Alternatives for HARDEN Words (16)induratetempercakeconsolidatedryfortifyossifypetrifyreinforcesetsolidifystiffenstrengthentougheninureseasonPhrases (1)firm upOpposite words for harden Alternatives for ROUGHEN Words (10)abradechafecoarsenfilegrooveroughscorescrapescratchscuffOpposite words for roughen Alternatives for WORSEN Words (8)aggravatedeclineexacerbatebetterdefeatdeteriorateexasperateoverpowerOpposite words for worsen Alternatives for WRINKLE Words (20)creasecrinklefurrowlinecorrugationfoldgrooveindentationpuckerridgeripplerucktuckcrispcrumplepurserucklerumplescrunchseamPhrases (1)scrunch upOpposite words for wrinkle