4
break(verb, raise, lose)
3
elevate(verb, raise, lose)
3
make uneven(verb, expression, idiom, raise, lose)
3
raise(verb, lose)
3
round(verb, raise, lose)
3
sharpen
2
crumple(verb, smooth)
2
fold(verb, smooth, lay, straighten)
2
rumple(verb, smooth, crush, wrinkle)
1
buckle(verb, straighten, warp, contort)
1
erect(verb, raise, lose)
1
fabricate
1
give
1
roughen
1
swell(verb, phrasal verb)
1
twist out of shape(verb, fix, smooth, level, straight)
0
add
0
administer
0
adorn
0
affront
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APASmart Define. (2015). flatten thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/flatten/thesaurus/antonyms
ChicagoSmart Define. 2015. "flatten thesaurus" https://smartdefine.org/flatten/thesaurus/antonyms (accessed September 20, 2026).
HarvardSmart Define 2015, flatten thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/flatten/thesaurus/antonyms>.
MLASmart Define. "flatten thesaurus" 5 November 2015. Web. 20 September 2026. <https://smartdefine.org/flatten/thesaurus/antonyms>