5
limitrophe state(expression, location, country, frontier)
4
border country(expression, location, country, frontier)
4
bordering country(expression, location, country, frontier)
4
bordering state(expression, location, country, frontier)
4
limitrophe(noun, location, country, frontier)
3
circumjacent state(expression, location, country, frontier)
3
neighbouring country(expression, location, country, frontier)
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APASmart Define. (1970). border state thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/border_state/thesaurus/synonyms
ChicagoSmart Define. 1970. "border state thesaurus" https://smartdefine.org/border_state/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 1970, border state thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/border_state/thesaurus/synonyms>.
MLASmart Define. "border state thesaurus" 1 January 1970. Web. 20 September 2026. <https://smartdefine.org/border_state/thesaurus/synonyms>