95 entries under fantastic topic. ×

2
fab(adjective, extraordinary, unusual, strange, superb)
2
grand(awful, wonderful, amazing, splendid)
2
great(adjective, pleasant, excellent, extraordinary, superb)
2
groovy(adjective, moving, lively, superb, wonderful)
2
inconceivable(adjective, great, extraordinary, unusual, strange)
2
marked(extraordinary, outstanding, remarkable, notable)
2
outrageous(adjective, superb, wonderful, marvelous)
2
super(adjective, cool, extraordinary, superb, wonderful)
2
unheard-of(adjective, unusual, strange, superb, exceptional)
1
A-OK(adjective, excellent, superb, wonderful, marvelous)
1
abnormal(adjective, extraordinary, unusual, strange, wonderful)
1
aces(adjective, excellent, superb, wonderful, marvelous)
1
atypical(adjective, unusual, strange, wonderful, exceptional)
1
best(adjective, excellent, superb, wonderful, marvelous)
1
bizarre(adjective, unusual, strange, wonderful, exceptional)
1
cool(adjective, great, extraordinary, superb, wonderful)
1
curious(adjective, extraordinary, unusual, strange, wonderful)
1
divine(adjective, cool, great, pleasant, keen)
1
doozie(adjective, excellent, superb, wonderful, marvelous)
1
dramatic(moving, extraordinary, stirring, inspiring)
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APASmart Define. (2015). astonishing thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/astonishing/thesaurus/synonyms
ChicagoSmart Define. 2015. "astonishing thesaurus" https://smartdefine.org/astonishing/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, astonishing thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/astonishing/thesaurus/synonyms>.
MLASmart Define. "astonishing thesaurus" 10 April 2015. Web. 1 October 2026. <https://smartdefine.org/astonishing/thesaurus/synonyms>