16 entries under adjective topic. ×

13
four(noun, four)
10
quartet(noun, four)
9
tetrad(noun, four)
5
fourth
5
quad(noun, four)
4
quadruple
4
quaternate
4
square
3
quadrilateral
2
4th
1
quadrangular
1
quadrigeminal
1
quarto
1
rectangular
0
cubic
0
tertiary
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APASmart Define. (2015). quaternary thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/quaternary/thesaurus/synonyms
ChicagoSmart Define. 2015. "quaternary thesaurus" https://smartdefine.org/quaternary/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, quaternary thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/quaternary/thesaurus/synonyms>.
MLASmart Define. "quaternary thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/quaternary/thesaurus/synonyms>