20
variable(adjective, unstable, unsettled, unpredictable, unreliable)
18
mutable(adjective, unstable, unsettled, unpredictable, unreliable)
17
changeable(adjective, form, unstable, unsettled, unpredictable)
15
versatile(adjective, person, knowledge, changeable, all round)
11
fluid(noun, adjective, unstable, unsettled, unpredictable)
11
inconstant(adjective, unstable, unsettled, unpredictable, unreliable)
10
ever-changing(adjective, changeable)
10
unsettled(adjective, unstable, unpredictable, unreliable, changeable)
10
unstable(adjective, unsettled, unpredictable, unreliable, changeable)
9
adaptable(adjective, changeable, versatile)
9
alterable(adjective, changeable, variable)
9
ever changing(expression, idiom, changeableness)
8
uncertain(adjective, unstable, unsettled, unpredictable, unreliable)
7
flexible(adjective, exceptional, skilled, changeable, fickle)
7
changeful(adjective, unstable, unsettled, unpredictable, unreliable)
7
fickle(adjective, unstable, unsettled, unpredictable, unreliable)
7
multiskilled
7
unsteady(adjective, unstable, unsettled, unpredictable, unreliable)
7
volatile(adjective, unstable, unsettled, unpredictable, unreliable)
6
adjustable(adjective, changeable)
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APASmart Define. (2015). protean thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/protean/thesaurus/synonyms
ChicagoSmart Define. 2015. "protean thesaurus" https://smartdefine.org/protean/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, protean thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/protean/thesaurus/synonyms>.
MLASmart Define. "protean thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/protean/thesaurus/synonyms>