4
pull down(verb, expression, drop, remove, press)
4
smoothen(verb, smooth, lay, equalize, steamed)
4
spread out(verb, expression, phrasal verb, open, release)
4
squish(verb, move, hold, press, smooth)
4
suppress(verb, calm, quiet, press, crush)
4
undo(verb, open, release, free, ruin)
3
abrade(verb, crush, level, squash, compress)
3
align(verb, smooth, level, match, balance)
3
burnish(verb, clear, press, smooth, level)
3
conquer(verb, drop, baffle, confound, perplex)
3
curves out(verb, fix, smooth, level, straight)
3
debase(verb, crush, level, squash, compress)
3
dismantle(verb, remove, ruin, destroy, crush)
3
down(verb, drop, cause, rise, slip)
3
eradicate(verb, destroy)
3
erect(verb, fix, smooth, level, straight)
3
even out(verb, expression, phrasal verb, change, set)
3
expand(set, cover, open, extend, spread)
3
exterminate(verb, destroy)
3
flat(verb, smooth)
10 years ago|9.1k views|share |citing 
APASmart Define. (2015). flatten thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/flatten/thesaurus/synonyms
ChicagoSmart Define. 2015. "flatten thesaurus" https://smartdefine.org/flatten/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, flatten thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/flatten/thesaurus/synonyms>.
MLASmart Define. "flatten thesaurus" 5 November 2015. Web. 21 September 2026. <https://smartdefine.org/flatten/thesaurus/synonyms>