14 entries under four topic. ×

20
square(noun, adjective, form, square, angularity)
16
quadrangle(noun, form, figure, shape, angularity)
13
rectangle(noun, square, diamond, angularity)
10
rectangular(adjective, square, angularity, equilateral)
8
quadrangular(adjective, angularity)
8
four(noun, adjective)
4
foursome
4
quad(noun, adjective)
4
quartet(noun, adjective)
4
quaternary
2
quadrature(noun, angularity)
1
quadrennium
1
quadrille
1
quarto
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APASmart Define. (2015). quadrilateral thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/quadrilateral/thesaurus/synonyms
ChicagoSmart Define. 2015. "quadrilateral thesaurus" https://smartdefine.org/quadrilateral/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, quadrilateral thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/quadrilateral/thesaurus/synonyms>.
MLASmart Define. "quadrilateral thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/quadrilateral/thesaurus/synonyms>