24 entries under adjective topic. ×

25
horizontal
4
inclined
3
flat
2
prostrate(flat, horizontal)
2
unerect
2
level(rough, irregular, broken, indefinite)
1
prone
0
parallel
0
plane(level, horizontal)
0
fair
0
flaccid
0
fluent
0
gloomy
0
impassive
0
inert
0
innocuous
0
languid
0
lank
0
lax
0
low
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APASmart Define. (2016). vertical thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/vertical/thesaurus/antonyms
ChicagoSmart Define. 2016. "vertical thesaurus" https://smartdefine.org/vertical/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, vertical thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/vertical/thesaurus/antonyms>.
MLASmart Define. "vertical thesaurus" 15 March 2016. Web. 23 September 2026. <https://smartdefine.org/vertical/thesaurus/antonyms>