Synonyms|287Antonyms|93|Broader|1Narrower|0Related|629

104 entries under adjective topic. ×

1
formative(fundamental, novel, unique, innovative)
1
marvellous
1
off-the-wall
1
prime
1
quaint
1
sui generis(exceptional, original)
1
unbelievable
1
undescribed
1
unsuspected
1
untypical
1
wonderous
0
all-time(superlative, singular, supreme, unsurpassed)
0
basic
0
benchmark
0
highest
0
influential
0
landmark
0
mind-blowing
0
mind-boggling
0
precedent-setting
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APASmart Define. (2016). unprecedented thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unprecedented/thesaurus/synonyms
ChicagoSmart Define. 2016. "unprecedented thesaurus" https://smartdefine.org/unprecedented/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, unprecedented thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unprecedented/thesaurus/synonyms>.
MLASmart Define. "unprecedented thesaurus" 15 January 2016. Web. 27 September 2026. <https://smartdefine.org/unprecedented/thesaurus/synonyms>