11
unpredictable(adjective, changeable)
8
eye-opening
6
capricious
6
spooky
5
curious
5
erratic(adjective, calm, unpredictable, consistent, wandering)
5
freakish
4
eccentric
4
inconsistent(certain, constant)
3
improbable(adjective, unpredictable)
3
irregular
3
magic
3
uncertain(adjective, clear, sure)
3
unforeseeable
3
unforeseen(adjective, unpredictable, expected, surprising)
3
unlikely
2
amazing
2
episodic
2
hazardous(adjective, strong, safe, unpredictable, dangerous)
2
wild
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APASmart Define. (2015). predictable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/predictable/thesaurus/antonyms
ChicagoSmart Define. 2015. "predictable thesaurus" https://smartdefine.org/predictable/thesaurus/antonyms (accessed September 20, 2026).
HarvardSmart Define 2015, predictable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/predictable/thesaurus/antonyms>.
MLASmart Define. "predictable thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/predictable/thesaurus/antonyms>