| duck soup(expression, simple, straightforward, basic, fundamental) | |
| earlier(adjective, preceding) | |
| earliest(beginning, opening, original, authentic, first) | |
| easy(simple, straightforward, basic, fundamental, uncomplicated) | |
| edifying | |
| educating | |
| educational | |
| educative | |
| emerging(adjective, beginning) | |
| enlightening | |
| erstwhile | |
| essential(adjective, simple, straightforward, basic, fundamental) | |
| exhortatory | |
| exordial | |
| facile(simple, straightforward, basic, fundamental, uncomplicated) | |
| first-hand(authentic, first, previous, initial, inchoate) | |
| first off(expression, adjective, head, beginning, prime) | |
| forerunning | |
| forward | |
| genesis(adjective, beginning) |
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| APA | Smart Define. (2015). introductory thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/introductory/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "introductory thesaurus" https://smartdefine.org/introductory/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, introductory thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/introductory/thesaurus/synonyms>. |
| MLA | Smart Define. "introductory thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/introductory/thesaurus/synonyms> |