Antonyms of noun nephew

1 sense of nephew

Sense 1
nephew -- (a son of your brother or sister)
       Antonym of niece (Sense 1)
      => niece -- (a daughter of your brother or sister)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun nephew

1 sense of nephew

Sense 1
nephew -- (a son of your brother or sister)
       => kinsman -- (a male relative)