42 entries under reasonable topic. ×
| earnest(adjective, keen, deep, rational) | |
| engrossed(adjective, keen, deep, rational) | |
| farsighted(adjective, keen, deep, rational) | |
| grave(adjective, keen, deep, rational) | |
| intent(adjective, keen, deep, rational) | |
| keen(adjective, deep, rational, sober) | |
| levelheaded(adjective, keen, deep, rational) | |
| logical(adjective, keen, deep, rational) | |
| lost in thought(expression, adjective, idiom, sober) | |
| melancholy(adjective, keen, deep, rational) | |
| museful(adjective, keen, deep, rational) | |
| musing(adjective, keen, deep, rational) | |
| pondering(adjective, keen, deep, rational) | |
| preoccupied(adjective, keen, deep, rational) | |
| rapt(adjective, keen, deep, rational) | |
| reflecting(adjective, keen, deep, rational) | |
| retrospective(adjective, keen, deep, rational) | |
| serious(adjective, keen, deep, rational) | |
| sober(adjective, keen, deep, rational) | |
| studious(adjective, keen, rational, intelligent) |
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| APA | Smart Define. (2015). subjective thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/subjective/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "subjective thesaurus" https://smartdefine.org/subjective/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, subjective thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/subjective/thesaurus/synonyms>. |
| MLA | Smart Define. "subjective thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/subjective/thesaurus/synonyms> |