47 entries under out-of-this-world topic. ×

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champion(adjective, bad, tough, top, perfect)
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doozie(striking, stupendous, unparalleled, prizewinning)
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fab(skillful, striking, stupendous, meritable, unparalleled)
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fabulous(unparalleled, prizewinning)
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gilt-edge(excellent, unparalleled, prizewinning, piked)
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high-up(select, meritable, unparalleled, prizewinning)
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high up(expression, select, meritable, unparalleled)
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hundred-proof(unparalleled, prizewinning)
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most(select, striking, stupendous, meritable, unparalleled)
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mostest(unparalleled, prizewinning)
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of highest order(expression, idiom, unparalleled, prizewinning)
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peerless(adjective, bad, tough, top, perfect)
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prize-winning(unparalleled, prizewinning)
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prizewinning
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rad(adjective, fantastic, select, awesome, outrageous)
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select(adjective, special, meritable, unparalleled, preferred)
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solid-gold(unparalleled, prizewinning)
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steller(unparalleled, prizewinning)
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tip top(expression, adjective, select, unparalleled, tip-top)
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top flight(expression, adjective, excellent, select, premium)
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APASmart Define. (2015). first class thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/first_class/thesaurus/synonyms
ChicagoSmart Define. 2015. "first class thesaurus" https://smartdefine.org/first_class/thesaurus/synonyms (accessed October 2, 2026).
HarvardSmart Define 2015, first class thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/first_class/thesaurus/synonyms>.
MLASmart Define. "first class thesaurus" 10 April 2015. Web. 2 October 2026. <https://smartdefine.org/first_class/thesaurus/synonyms>