13
gramps(noun, grandpa, grandsire, granddad)
13
grandpa(noun, grandsire, granddad)
11
grandsire(noun, veteran, paternity, grandpa, granddad)
10
granddad(noun, grandpa, grandsire)
10
patriarch(noun, head, veteran, dignitary, grandsire)
8
father(noun, head, boss, man, fellow)
7
grandad
7
granddaddy(noun, grandpa, grandsire, granddad)
6
male(noun, man, guy, gentleman, bloke)
6
forefather(noun, grandsire)
5
parent(noun, paternity)
5
root
5
ancestor(noun, paternity, grandsire)
5
dotard
5
forebear
5
sire(noun, paternity)
4
elder(noun, dignitary, grandsire)
4
foregoer
4
great-grandfather
4
primogenitor
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APASmart Define. (2016). grandfather thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/grandfather/thesaurus/synonyms
ChicagoSmart Define. 2016. "grandfather thesaurus" https://smartdefine.org/grandfather/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, grandfather thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/grandfather/thesaurus/synonyms>.
MLASmart Define. "grandfather thesaurus" 2 March 2016. Web. 21 September 2026. <https://smartdefine.org/grandfather/thesaurus/synonyms>