Synonyms|1.1kAntonyms|177|Broader|12Narrower|18Related|469
2
unfaithful
2
active
2
changeable(calm, constant)
2
erratic(calm, consistent)
2
faltering
2
hesitant
1
metamorphosis
1
mobile
1
movable
1
perfidious
1
recreant
1
treacherous
1
volatile(adjective, certain, stable, changeable, explosive)
1
weak(adjective, wavering)
0
uncertain
0
uncommitted
0
untrue
0
acquiescent
0
adaptable
0
adjustable
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APASmart Define. (2016). steadfast thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/steadfast/thesaurus/antonyms
ChicagoSmart Define. 2016. "steadfast thesaurus" https://smartdefine.org/steadfast/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, steadfast thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/steadfast/thesaurus/antonyms>.
MLASmart Define. "steadfast thesaurus" 11 March 2016. Web. 23 September 2026. <https://smartdefine.org/steadfast/thesaurus/antonyms>