29 entries under unique topic. ×

13
unusual(adjective, obscure, strange, exceptional, marvelous)
12
strange(adjective, excellent, obscure, extraordinary, unusual)
12
unknown(adjective, knowledge, obscure, strange, mysterious)
11
exceptional(adjective, obscure, irregular)
11
extraordinary(adjective, excellent, unusual, strange, superb)
10
rare(adjective, obscure, extraordinary, strange, special)
10
unprecedented(adjective, obscure, exceptional, original)
9
nameless(adjective, knowledge, obscure, strange, unknown)
9
unfamiliar(adjective, obscure, strange, exceptional, marvelous)
8
singular(adjective, obscure)
7
outlandish(adjective, obscure, strange, bizarre)
7
remarkable(adjective, excellent, extraordinary, unusual, strange)
7
unbelievable(adjective, obscure, extraordinary, strange, doubtful)
7
unsung(adjective, obscure, new, remote, unknown)
6
inconceivable(adjective, obscure, belief, exceptional, marvelous)
6
novel(adjective, obscure)
5
undiscovered(adjective, obscure, strange, new, remote)
4
new(adjective, obscure, strange, exceptional, fantastic)
4
phenomenal(adjective, excellent, extraordinary, unusual, strange)
4
shocking(adjective, obscure)
<12>
11 years ago|5.5k views|share |citing 
APASmart Define. (2015). unheard-of thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unheard-of/thesaurus/synonyms
ChicagoSmart Define. 2015. "unheard-of thesaurus" https://smartdefine.org/unheard-of/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, unheard-of thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unheard-of/thesaurus/synonyms>.
MLASmart Define. "unheard-of thesaurus" 14 April 2015. Web. 30 September 2026. <https://smartdefine.org/unheard-of/thesaurus/synonyms>