Synonyms|49Antonyms|0|Broader|0Narrower|0Related|0

48 entries under frontier topic. ×

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frame(noun, border, borderline)
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fringe(noun, border, borderline)
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hem(noun, border, borderline)
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horizon(noun, border, borderline)
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limit(border, borderline)
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limits(noun, border, borderline)
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line(noun, border, borderline)
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march(noun, border, borderline)
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margin(noun, border, borderline)
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mark(noun, border, borderline)
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mere(noun, border, borderline)
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mete(noun, border, borderline)
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outline(noun, border, borderline)
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outpost(noun, border, borderline)
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pale(noun, border, borderline)
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perimeter(noun, border, borderline)
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periphery(noun, border, borderline)
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precinct(noun, border, borderline)
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purlieus(noun, border, borderline)
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radius(noun, border, borderline)
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APASmart Define. (2015). outer limit thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/outer_limit/thesaurus/synonyms
ChicagoSmart Define. 2015. "outer limit thesaurus" https://smartdefine.org/outer_limit/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, outer limit thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/outer_limit/thesaurus/synonyms>.
MLASmart Define. "outer limit thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/outer_limit/thesaurus/synonyms>