112 entries under hard topic. ×
| malodorous(adjective, old, sour, musty) | |
| noisome(adjective, old, sour, musty) | |
| out(adjective, dull, tired, old) | |
| parched(adjective, old, sour, musty) | |
| passé(dull, tired, old, sour) | |
| past(adjective, dull, tired, old) | |
| past its best(expression, adjective, idiom, old) | |
| past its sell-by date(expression, adjective, idiom, old) | |
| reeking(adjective, old, sour, musty) | |
| smelly(adjective, old, sour, musty) | |
| stenchy(adjective, old, sour, musty) | |
| stinking(adjective, old, sour, musty) |
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| APA | Smart Define. (2016). flat thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/flat/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "flat thesaurus" https://smartdefine.org/flat/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, flat thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/flat/thesaurus/synonyms>. |
| MLA | Smart Define. "flat thesaurus" 1 March 2016. Web. 22 September 2026. <https://smartdefine.org/flat/thesaurus/synonyms> |