The best replacement for niece is neice.

The best alternatives to niece are rated as following:
★★★★★  neice
★★★★  cousin
★★★  niece
★★★  grand niece
★★  great niece
★★  nephew
  aunt
  grandniece

Your alternative for niece is not listed? Suggest!
Speaking about niece, one probably shouldn't forget about uncle.

Other search terms related to niece and their ratings are:
★★★★★ uncle
You have in mind a companion for niece and it is not yet here? Propose!



Google Trends

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niece
neice
cousin