43 entries under noun topic. ×
| concrete(thing, conception, excitant, ideality) | |
| disbelief | |
| reality(thing, abstract) | |
| reliability | |
| truth | |
| entity(object, abstract) | |
| certainty(uncertainty, truth, fact) | |
| accuracy | |
| actuality | |
| affirmation | |
| assurance | |
| assuredness | |
| authenticity | |
| certitude | |
| confidence | |
| confirmation | |
| constancy | |
| deed | |
| determination | |
| exactitude |
For more, visit
Idea on
Power Thesaurus
| APA | Smart Define. (2016). idea thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/idea/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "idea thesaurus" https://smartdefine.org/idea/thesaurus/antonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, idea thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/idea/thesaurus/antonyms>. |
| MLA | Smart Define. "idea thesaurus" 25 February 2016. Web. 27 September 2026. <https://smartdefine.org/idea/thesaurus/antonyms> |