noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A great-grandson of one's sibling, a grandson of one's nephew or niece. (Brother's great-grandson: fraternal great-grandnephew. Sister's great-grandson: sororal great-grandnephew.)

Synonyms

All synonyms

great-great-nephew

Etymology

From great- + grandnephew.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.