5 entries under steep topic. ×

2
plumb(adjective, straight, upright, erect)
2
standing(adjective, straight, upright, erect)
1
on end(expression, adjective, straight, upright)
1
straight-up(adjective, straight, upright, erect)
0
horizontal(adjective, straight, upright, vertical)
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APASmart Define. (2015). stand-up thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/stand-up/thesaurus/synonyms
ChicagoSmart Define. 2015. "stand-up thesaurus" https://smartdefine.org/stand-up/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, stand-up thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/stand-up/thesaurus/synonyms>.
MLASmart Define. "stand-up thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/stand-up/thesaurus/synonyms>