- Definitions|2
- Thesaurus|397
- Abbreviations|0
77 entries under adjective topic. ×
| dull | |
| boring | |
| drab | |
| dreary | |
| flat | |
| lustreless | |
| colourless | |
| tedious | |
| vapid | |
| dismal | |
| lackluster(dull, flat, clean, plain) | |
| lusterless | |
| tiresome | |
| uninteresting | |
| bland | |
| dingy | |
| insipid | |
| slow | |
| dense | |
| prosaic |
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| APA | Smart Define. (2015). lacklustre thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/lacklustre/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "lacklustre thesaurus" https://smartdefine.org/lacklustre/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, lacklustre thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/lacklustre/thesaurus/synonyms>. |
| MLA | Smart Define. "lacklustre thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/lacklustre/thesaurus/synonyms> |