| incursion(noun, attack, sortie) | |
| infiltration | |
| inflation(noun, advance, increase, raise, rise) | |
| innovatory(adjective, momentous, milestone, landmark) | |
| inspiration(noun, idea) | |
| intensification(noun, advance, increase, raise, gain) | |
| introduction | |
| jump(noun, support, break, advance, increase) | |
| landmark(noun, adjective, mark, sign, revolution) | |
| lift(noun, support, break, advance, increase) | |
| lightning attack | |
| lightning war | |
| manifestation(noun, discovery) | |
| mass attack | |
| maximization(noun, raise, gain, rise, growth) | |
| merger(noun, raise, gain, rise, growth) | |
| momentous(adjective, milestone, landmark) | |
| mugging | |
| multiplication(noun, advance, increase, raise, rise) | |
| neologism |
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| APA | Smart Define. (2015). breakthrough thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/breakthrough/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "breakthrough thesaurus" https://smartdefine.org/breakthrough/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, breakthrough thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/breakthrough/thesaurus/synonyms>. |
| MLA | Smart Define. "breakthrough thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/breakthrough/thesaurus/synonyms> |