Synonyms|293Antonyms|88|Broader|9Narrower|6Related|300
13
perpendicular
3
horizontal
3
parallel
3
vertical
2
direct
1
equitable
1
level
1
plumb
1
bilateral
1
bland
1
candid
1
erect
1
even
1
evenhanded
1
fair
1
fair-minded
1
flat
1
forthwith
1
frankly
0
honourable
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APASmart Define. (2015). diagonal thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/diagonal/thesaurus/antonyms
ChicagoSmart Define. 2015. "diagonal thesaurus" https://smartdefine.org/diagonal/thesaurus/antonyms (accessed September 20, 2026).
HarvardSmart Define 2015, diagonal thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/diagonal/thesaurus/antonyms>.
MLASmart Define. "diagonal thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/diagonal/thesaurus/antonyms>