52 entries under expression topic. ×
| sine qua non(noun, idiom, importance) | |
| foundation stone(noun, idiom, foundation) | |
| cardinal point(idiom, importance) | |
| great point(idiom, importance) | |
| chief ingredient(noun, support, action, base) | |
| hard fact(noun, support, action, base) | |
| primum mobile(idiom, motive) | |
| principal element(noun, support, action, base) | |
| starting point(noun, base, beginning, source) | |
| vital element(essential, foundation, kingpin, fulcrum) | |
| work done(idiom, completion) | |
| arriere pensee(idiom, motive) | |
| building block | |
| by end(idiom, motive) | |
| by purpose(idiom, motive) | |
| chapter and verse(noun, idiom, law, regulation) | |
| corner stone(idiom, importance) | |
| coup de grace(idiom, completion) | |
| crowning touch(idiom, completion) | |
| essential part(idiom, importance) |
For more, visit
Keystone on
Power Thesaurus
| APA | Smart Define. (2015). keystone thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/keystone/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "keystone thesaurus" https://smartdefine.org/keystone/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, keystone thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/keystone/thesaurus/synonyms>. |
| MLA | Smart Define. "keystone thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/keystone/thesaurus/synonyms> |