SISTER Antonyms There are 16 antonyms of the word sister. (opposite meanings)Did you mean?Definition of SISTERAlso try opposite words for..sisterssisterlysisterhoodBest Opposite Words For SISTERTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1brothernounn2boynounn3brotherhoodnounn4brotherlyadjectiveadj5cousinnounn6dudenounn7fatherverb, nounv, n8fellownoun, adjectiven, adj9gentlemannounn10guynounn11ladnounn12mannounn13siblingnounn14sonnounn15unclenounn16male siblingnoun, adjectiven, adj Alternatives for BROTHER Words (6)buddychumcomradecronypalsidekickPhrases (1)blood brotherOpposite words for brother Alternatives for BOY Words (9)sonbratchapguyknaveladmanservantmatesquirtPhrases (1)male childOpposite words for boy Alternatives for BROTHERHOOD Words (16)fraternityfellowshipaffiliationalliancecamaraderiecompanionshipcomraderycooperationkinshipsolidaritytogethernessunitysodalityassociationbrethrenunionPhrases (3)labor uniontrade uniontrades unionOpposite words for brotherhood Alternatives for BROTHERLY Words (2)brotherlikefraternalOpposite words for brotherly Alternatives for COUSIN Words (1)cousin-germanPhrases (2)first cousinfull cousinOpposite words for cousin Alternatives for DUDE Words (15)dandyfopbeaublokebusterchapclotheshorsecovefellowgallantguymashermatesheikswellPhrases (1)fashion plateOpposite words for dude Alternatives for FATHER Words (20)siredaddaddypapaparentpopmotherbegetbegetterbeginnerdonengenderfather-godfatherhoodforefatherfoundergenerategetgranddaddypadrePhrases (6)bring forthchurch fatherfather of the churchfounding fathergod the fathermale parentOpposite words for father Alternatives for FELLOW Words (35)associatecolleaguecompanioncomrademateallybuddychumco-workercohortcollaboratorcompatriotcompeerconfederatecounterpartfriendpalpartnerbeaublighterblokeboyfriendbusterchapconfrerecussdudefamiliarfellafellerfellowgentladschoolfellowswainOpposite words for fellow