12
flat
6
planar
4
multidimensional(adjective, component, measurement, versatile, dimension)
3
bland
3
dead
3
insipid
3
lacklustre
3
small
2
2-dimensional
2
dull
2
lifeless
2
monotonous
2
prosaic
2
tiresome
2
uninteresting
2
vapid
1
colourless
1
commonplace
1
coplanar
1
cubic
11 years ago|4.2k views|share |citing 
APASmart Define. (2015). two-dimensional thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/two-dimensional/thesaurus/synonyms
ChicagoSmart Define. 2015. "two-dimensional thesaurus" https://smartdefine.org/two-dimensional/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, two-dimensional thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/two-dimensional/thesaurus/synonyms>.
MLASmart Define. "two-dimensional thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/two-dimensional/thesaurus/synonyms>