109 entries under irregular topic. ×

1
heteroclite(adjective, strange, exceptional, usual)
1
heterodox(strange, exceptional, unconventional, nonstandard)
1
intermittent(adjective, casual, unpredictable, unreliable)
1
mad(adjective, strange, silly, foolish, crazy)
1
off-base(strange, exceptional, weird, abnormal)
1
off-center(extraordinary, wild, strange, crazy)
1
off-color(strange, exceptional, weird, abnormal)
1
off the wall(expression, idiom, wild, strange)
1
out in left field(expression, idiom, wild, strange)
1
out of line(expression, idiom, strange, exceptional)
1
quizzical(adjective, extraordinary, wild, strange, crazy)
1
spasmodic(odd, unpredictable, unreliable, rare)
1
touched(adjective, strange, silly, foolish, crazy)
1
uncertain(dubious, unpredictable, unreliable, suspect)
1
usual(adjective, strange, peculiar, abnormal)
1
way out(expression, extraordinary, wild, strange, crazy)
1
wayward(unpredictable, unreliable, fanciful, quirky)
0
arbitrary(unpredictable, unreliable, fanciful, quirky)
0
cockeyed(extraordinary, wild, strange, crazy)
0
desultory(chance, unpredictable, unreliable, infrequent)
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APASmart Define. (2016). unusual thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unusual/thesaurus/synonyms
ChicagoSmart Define. 2016. "unusual thesaurus" https://smartdefine.org/unusual/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, unusual thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unusual/thesaurus/synonyms>.
MLASmart Define. "unusual thesaurus" 31 March 2016. Web. 28 September 2026. <https://smartdefine.org/unusual/thesaurus/synonyms>