| improved | |
| in the sky(expression, idiom, higher, upper, abovementioned) | |
| in the upper story(expression, idiom, higher, upper, abovementioned) | |
| in to(expression, skillful, meritable, slighty) | |
| incomparable(adjective, bad, tough, top, perfect) | |
| inimitable(adjective, bad, tough, top, perfect) | |
| intercontinental(primo, top-of-the-line) | |
| international(primo, top-of-the-line) | |
| know stuff(expression, skillful, striking, stupendous, meritable) | |
| laid back(expression, higher, upper, abovementioned) | |
| larger | |
| larger than(expression, higher, upper, abovementioned) | |
| laureate(adjective, five-star) | |
| leading(adjective, bad, tough, top, perfect) | |
| long ago(expression, higher, upper, abovementioned) | |
| long gone(expression, higher, upper, abovementioned) | |
| major(higher, upper, abovementioned) | |
| master(skillful, meritable, slighty) | |
| masterful(skillful, meritable, slighty) |
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| APA | Smart Define. (2015). first class thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/first_class/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "first class thesaurus" https://smartdefine.org/first_class/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, first class thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/first_class/thesaurus/synonyms>. |
| MLA | Smart Define. "first class thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/first_class/thesaurus/synonyms> |