Grandnephew definition

grăndnĕfyo͝o, grăn-
The grandson of one's brother or sister; great-nephew.
noun
9
2
A son of one's nephew or niece.
noun
8
1
Grandson of one's sibling.
noun
2
4
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Other Word Forms

Noun

Singular:
grandnephew
Plural:
grandnephews