202 entries under fundamental topic. ×
| life-or-death(adjective, important, critical, basic) | |
| nub(noun, adjective, original, heart, basic) | |
| nucleus(noun, support, action, base, importance) | |
| perfect(adjective, basic, greatness) | |
| bedrock(noun, support, action, base, beginning) | |
| center(noun, adjective, support, action, base) | |
| cold(adjective, hard, severe, basic) | |
| compulsion(noun, right, concern, demand, want) | |
| crux(noun, support, action, base, beginning) | |
| heavy(adjective, big, important, significant, substantial) | |
| meat and potatoes(noun, expression, adjective, idiom, simple) | |
| name of the game(noun, expression, adjective, important, critical) | |
| no-frills(shorts, undercarriage) | |
| postulate(noun, support, action, condition, base) | |
| substratal(adjective, simple, plain, important, significant) | |
| ABCs(noun, simple, straightforward, basic) | |
| abecedarian(adjective, simple, straightforward, basic) | |
| action(noun, support, base, beginning, source) | |
| antecedent(noun, support, action, base, beginning) | |
| assumption(noun, support, action, base, beginning) |
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| APA | Smart Define. (2016). essential thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/essential/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "essential thesaurus" https://smartdefine.org/essential/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, essential thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/essential/thesaurus/synonyms>. |
| MLA | Smart Define. "essential thesaurus" 31 March 2016. Web. 26 September 2026. <https://smartdefine.org/essential/thesaurus/synonyms> |