61 entries under adjective topic. ×

34
upright(noun, adverb, smooth, solid)
28
perpendicular(noun, smooth, sharp, solid)
22
erect(verb, smooth, sharp, solid)
15
straight(direct, right, level, true)
14
plumb(smooth, solid, level, true)
13
steep(sharp, straight, upright, erect)
11
sheer(smooth, sharp, solid, level)
11
standing(verb, firm, straight, upright)
11
upstanding(firm, straight, upright, erect)
8
up-and-down(upright, variable)
6
normal
6
rampant
5
raised(sharp, firm, straight, upright)
5
abrupt(sharp, upright, steep, sheer)
5
cocked(firm, straight, upright, erect)
5
precipitous(smooth, right, sharp, solid)
5
sharp(steep, sheer)
5
unbowed
4
stand-up(straight, upright, erect, upstanding)
4
erectile(firm, straight, upright)
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APASmart Define. (2016). vertical thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/vertical/thesaurus/synonyms
ChicagoSmart Define. 2016. "vertical thesaurus" https://smartdefine.org/vertical/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, vertical thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/vertical/thesaurus/synonyms>.
MLASmart Define. "vertical thesaurus" 15 March 2016. Web. 20 September 2026. <https://smartdefine.org/vertical/thesaurus/synonyms>