18 entries under noun topic. ×

8
breakthrough(momentous, milestone, landmark)
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cause
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ceremony
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chance
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chasm
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commencement
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crack
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door
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entrance
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establishment
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facility
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gap
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hole
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induction
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mouth
0
occasion
0
onset
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opening
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APASmart Define. (2015). groundbreaking thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/groundbreaking/thesaurus/synonyms
ChicagoSmart Define. 2015. "groundbreaking thesaurus" https://smartdefine.org/groundbreaking/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, groundbreaking thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/groundbreaking/thesaurus/synonyms>.
MLASmart Define. "groundbreaking thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/groundbreaking/thesaurus/synonyms>