9
conterminous(adjective, equal, parallel, touching, equivalent)
8
coextensive(adjective, like, equal, parallel, equivalent)
6
adjoining(adjective, order, time, touching, following)
6
contiguous(adjective, touching, adjacent, confronting, centrolineal)
5
adjacent
5
concurrent(adjective, similar, joint, contemporary, collateral)
5
next(adjective, order, time, parallel, coming)
5
participative
4
concomitant(adjective, subject, collateral, attendant, subsidiary)
3
bordering
3
coetaneous
3
coeval
3
coexistent
3
coincident(adjective, equal, parallel, similar, joint)
3
coincidental
3
contemporaneous
3
corresponding(adjective, equal, parallel, equivalent, coincident)
3
equal(adjective, level, exact, even, parallel)
3
equivalent(adjective, level, exact, equal, even)
3
neighboring
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APASmart Define. (2015). coterminous thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/coterminous/thesaurus/synonyms
ChicagoSmart Define. 2015. "coterminous thesaurus" https://smartdefine.org/coterminous/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, coterminous thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/coterminous/thesaurus/synonyms>.
MLASmart Define. "coterminous thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/coterminous/thesaurus/synonyms>