| go | |
| golden age | |
| halladay stat | |
| heyday | |
| historic period | |
| horology | |
| infinity | |
| instance | |
| iron age | |
| juncture(noun, time, present, turn, point) | |
| life span(noun, expression, present, turn, point) | |
| long time | |
| lunation | |
| lustrum | |
| many a moon | |
| many years duration(expression, idiom) | |
| memorable time | |
| millisecond | |
| moon | |
| neolithic |
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| APA | Smart Define. (2016). era thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/era/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "era thesaurus" https://smartdefine.org/era/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, era thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/era/thesaurus/synonyms>. |
| MLA | Smart Define. "era thesaurus" 2 March 2016. Web. 22 September 2026. <https://smartdefine.org/era/thesaurus/synonyms> |