Antonyms of noun niece

1 sense of niece

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

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

1 sense of niece

Sense 1
niece -- (a daughter of your brother or sister)
       => kinswoman -- (a female relative)