- Definitions|3
- Thesaurus|612
- Abbreviations|0
| decrescendo | |
| depression(noun, dullness, tedium, monotony, prostration) | |
| desert(noun, prairie) | |
| detachment(noun, melancholy, dullness, apathy, indifference) | |
| diaphony | |
| dimensionality | |
| directness | |
| discomfort | |
| discomposure | |
| disgust(noun, melancholy, dullness, apathy, indifference) | |
| disharmony | |
| disinterest weariness(expression, melancholy, dullness, apathy, indifference) | |
| dislike | |
| displeasure | |
| disquiet | |
| dissatisfaction | |
| dissonance | |
| distaste(noun, melancholy, dullness, apathy, indifference) | |
| doldrums(noun, melancholy, dullness, apathy, indifference) | |
| dull(noun, dullness, commonplace, tag, boredom) |
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| APA | Smart Define. (2015). flatness thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/flatness/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "flatness thesaurus" https://smartdefine.org/flatness/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, flatness thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/flatness/thesaurus/synonyms>. |
| MLA | Smart Define. "flatness thesaurus" 15 June 2015. Web. 21 September 2026. <https://smartdefine.org/flatness/thesaurus/synonyms> |