Synonyms|417Antonyms|100|Broader|7Narrower|3Related|1k
14
vertical(adjective, rough, level, upright)
6
upright(adjective, rough, level, vertical)
5
diagonal
4
good
4
inclined
4
perpendicular
3
plumb(adjective, vertical)
3
slanting
3
sloped
2
sloping
1
abrupt
1
aslant
1
aslope
1
atilt
1
broken
1
canted
1
high-pitched
1
hilly
1
irregular
1
leaning
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APASmart Define. (2015). horizontal thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/horizontal/thesaurus/antonyms
ChicagoSmart Define. 2015. "horizontal thesaurus" https://smartdefine.org/horizontal/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2015, horizontal thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/horizontal/thesaurus/antonyms>.
MLASmart Define. "horizontal thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/horizontal/thesaurus/antonyms>