11
peculiar(adjective, unusual, strange, crazy, usual)
11
planetary(adjective, irregular, unsettled, unpredictable, unreliable)
10
aberrant(adjective, unusual, wild, strange, unpredictable)
10
abnormal(adjective, unusual, strange, irregular, unpredictable)
10
desultory(adjective, casual, irregular, unpredictable, deviation)
10
devious(adjective, irregular, unsettled, purpose, unpredictable)
10
quaint(adjective, unusual, wild, strange, crazy)
10
shifting(adjective, unstable, irregular, unsettled, shaky)
10
vacillating(adjective, unstable, irregular, doubtful, unsettled)
10
wandering(adjective, irregular, purpose, ambiguous, frivolous)
10
weird(adjective, unusual, strange, crazy, usual)
9
arbitrary(adjective, careless, unstable, unreasonable, chance)
9
casual(adjective, careless, chance, frivolous, random)
9
fantastic(adjective, change, continue, unusual, strange)
9
intermittent(adjective, violent, irregular, unpredictable, disturbed)
9
restless(adjective, unstable, irregular, unsettled, agitated)
9
stray(adjective, irregular, purpose, unpredictable, unreliable)
9
unconventional(adjective, extraordinary, unusual, wild, strange)
9
unorganized
8
aimless(adjective, careless, casual, random, haphazard)
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APASmart Define. (2016). erratic thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/erratic/thesaurus/synonyms
ChicagoSmart Define. 2016. "erratic thesaurus" https://smartdefine.org/erratic/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, erratic thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/erratic/thesaurus/synonyms>.
MLASmart Define. "erratic thesaurus" 26 February 2016. Web. 22 September 2026. <https://smartdefine.org/erratic/thesaurus/synonyms>