A really fast thesaurus... with lots of synonyms.
Foster brother has 8 synonyms. The top synonyms for foster brother are sister, sissy, son, aunt, uncle, mother, nephew, niece. Another word for foster brother is sister. Browse the full list below.
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| Random | DefinitionA common synonym for foster brother is sister. Other synonyms include sissy, son, aunt, uncle.
Foster brother has 8 synonyms listed on Thesaurasize.
°The son of one's stepfather or stepmother from a former marriage.
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