31 entries under adjective topic. ×
| landmark(noun, mark, sign, point) | |
| breakthrough(noun, mark, sign, achievement) | |
| historic(momentous, landmark) | |
| innovatory(momentous, landmark) | |
| revolutionary(momentous, landmark) | |
| innovative(momentous, landmark) | |
| extreme | |
| momentous | |
| pioneering(momentous, landmark) | |
| radical(momentous, landmark) | |
| significant(momentous, landmark) | |
| advanced | |
| avant garde | |
| basic | |
| critical | |
| cutting-edge | |
| emphatic | |
| exhaustive | |
| expressive | |
| grave |
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| APA | Smart Define. (2015). milestone thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/milestone/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "milestone thesaurus" https://smartdefine.org/milestone/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, milestone thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/milestone/thesaurus/synonyms>. |
| MLA | Smart Define. "milestone thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/milestone/thesaurus/synonyms> |