Synonyms|148Antonyms|11|Broader|0Narrower|0Related|67
9
ever-changing
6
perpendicular(adjective, variable, vertical)
6
vertical(adjective, upright, variable, vertical)
5
steep(adjective, vertical)
3
sheer(adjective, vertical)
2
seesaw(adjective, variable)
2
uneven(adjective, variable)
2
upright(adjective, vertical)
1
abrupt(passionate, violent, thoughtless, impetuous, unwary)
1
ad-lib(thoughtless, impetuous, unwary)
1
alternate
1
amorphous
1
automatic(thoughtless, impetuous, unwary)
1
back-and-forth
1
back and forth(expression, idiom)
1
blowing hot and cold(expression, idiom, lively, unpredictable, changeable)
1
bubbleheaded(lively, unpredictable, changeable, temperamental, resilient)
1
buoyant(lively, impulsive, unpredictable, changeable, resilient)
1
careless(passionate, violent, thoughtless, abrupt, impetuous)
1
devil-may-care(passionate, violent, thoughtless, abrupt, impetuous)
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APASmart Define. (2015). up-and-down thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/up-and-down/thesaurus/synonyms
ChicagoSmart Define. 2015. "up-and-down thesaurus" https://smartdefine.org/up-and-down/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, up-and-down thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/up-and-down/thesaurus/synonyms>.
MLASmart Define. "up-and-down thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/up-and-down/thesaurus/synonyms>