SISTERLESS Antonyms There are 3 antonyms of the word sisterless. (opposite meanings)Did you mean?Definition of SISTERLESSAlso try opposite words for..lesssistersistersBest Opposite Words For SISTERLESSTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1familialadjectiveadj2sisterlyadjectiveadj3sororaladjectiveadj Alternatives for FAMILIAL Words (5)genetichereditaryinheritedtransmissibletransmittedOpposite words for familial Alternatives for SISTERLY Words (2)sisterlikesororalOpposite words for sisterly Alternatives for SORORAL Words (2)sisterlysisterlikeOpposite words for sororal