- great-great-grandfather (great-great-grandmother for the feminine form)
- (usually in the plural) great-great-grandparent (either a great-great-grandmother or a great-great-grandfather)
The noun tatarabuelo is like several other Spanish nouns with a human referent. The masculine forms are used when the referent is known to be male, a group of males, a group of mixed or unknown gender, or an individual of unknown or unspecified gender. The feminine forms are used if the referent is known to be female or a group of females.