PRANKFUL Antonyms There are 8 antonyms of the word prankful. (opposite meanings)Did you mean?Definition of PRANKFULAlso try opposite words for..prankedprankingBest Opposite Words For PRANKFULTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1earnestadjectiveadj2genuineadjectiveadj3gravenoun, adjectiven, adj4seriousadjectiveadj5sincereadjectiveadj6solemnadjectiveadj7straightnoun, adjectiven, adj8unhumorousadjectiveadj Alternatives for EARNEST Words (18)heartfeltsincerededicatedgenuineseriouswholeheartedbusinesslikedeardeservedevoutgarnergeneratemakemeritrendersolemnwinyieldOpposite words for earnest Alternatives for GENUINE Words (12)realtrueactualauthentichonestlegitimateoriginalsincereechtliteralnaturalunfeignedPhrases (1)bona fideOpposite words for genuine Alternatives for GRAVE Words (24)sedateserioussobersolemngrievousimportantmomentoussombrestaidweightydangerousdemureengraveheavyinscribelife-threateningsagescratchsculptsculptureseverethoughtfultombsweerPhrases (1)grave accentOpposite words for grave Alternatives for SERIOUS Words (16)earnestsolemngraveseveresoberdeterminedresolutesomberstaidthoughtfulweightydangerousgoodgrievouslife-threateningunplayfulOpposite words for serious Alternatives for SINCERE Words (14)earnestauthenticcandiddevotedfrankgenuineheartfelthonestloyalserioustruetrustworthywholeheartedsolemnPhrases (1)bona fideOpposite words for sincere Alternatives for SOLEMN Words (9)earnestgravesedatesoberserioussomberstaidweightysincereOpposite words for solemn Alternatives for STRAIGHT Words (16)squaredirectlystraightedgeheteroconsecutivedirectflatfull-strengthheterosexualneatstraightawaystraightforwardtrueunbentunboweduncoiledPhrases (2)heterosexual personstraight personOpposite words for straight Alternatives for UNHUMOROUS Words (2)humorlesshumourlessOpposite words for unhumorous