8 entries under four topic. ×

10
quadrangular(adjective, square, angularity, four-sided)
10
square(adjective, regular, angularity, patterned, symmetrical)
5
quadrilateral(adjective, square, angularity, equilateral)
1
four
1
quad
1
quartet
1
quarto
1
quaternary
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APASmart Define. (2015). rectangular thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/rectangular/thesaurus/synonyms
ChicagoSmart Define. 2015. "rectangular thesaurus" https://smartdefine.org/rectangular/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, rectangular thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/rectangular/thesaurus/synonyms>.
MLASmart Define. "rectangular thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/rectangular/thesaurus/synonyms>