Synonyms|1kAntonyms|341|Broader|21Narrower|11Related|2.3k

2 entries under horizontal topic. ×

2
plane(adjective, level)
0
prostrate(adjective, flat)
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APASmart Define. (2015). upright thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/upright/thesaurus/antonyms
ChicagoSmart Define. 2015. "upright thesaurus" https://smartdefine.org/upright/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2015, upright thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/upright/thesaurus/antonyms>.
MLASmart Define. "upright thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/upright/thesaurus/antonyms>