100 entries under noun topic. ×

23
four(adjective, four)
13
quadruplet
12
foursome
11
tetrad
9
quaternary(adjective, four)
8
quaternion
8
quatern
8
quaternity
7
quad(adjective, four)
6
ensemble(company, group, band, collection)
5
square(adjective, four)
4
4
3
quartette
3
IV
3
duo
3
band(company, group, cast, collection)
3
quadrangle
3
quadrilateral(adjective, four)
3
rectangle
3
harmony
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APASmart Define. (2015). quartet thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/quartet/thesaurus/synonyms
ChicagoSmart Define. 2015. "quartet thesaurus" https://smartdefine.org/quartet/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, quartet thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/quartet/thesaurus/synonyms>.
MLASmart Define. "quartet thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/quartet/thesaurus/synonyms>