Synonyms|96Antonyms|2|Broader|4Narrower|0Related|105
13
four(noun, adjective, four)
10
quartet(noun, adjective, four)
9
quaternion
9
tetrad(noun, adjective, four)
8
quatern
8
quaternity
7
foursome
7
quadruplet
5
four
5
fourth
5
quad(noun, adjective, four)
4
4
4
IV
4
Quaternary period(noun, expression, idiom)
4
quadruple(noun, adjective)
4
quadruplet
4
quaternate
4
square(adjective, four)
3
Age of Man(noun, expression, idiom)
3
foursome
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APASmart Define. (2015). quaternary thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/quaternary/thesaurus/synonyms
ChicagoSmart Define. 2015. "quaternary thesaurus" https://smartdefine.org/quaternary/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, quaternary thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/quaternary/thesaurus/synonyms>.
MLASmart Define. "quaternary thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/quaternary/thesaurus/synonyms>