fantastically

adverb

fan·​tas·​ti·​cal·​ly fan-ˈta-sti-k(ə-)lē 

fən-

1

: in a fantastic manner

2

: to a fantastic degree : extremely

fantastically expensive clothes

Synonyms of fantastically

• extremely
• incredibly
• very
• terribly
• highly
• too
• badly
• damned
• so
• damn
• really
• severely
• desperately
• super
• intensely

Examples of fantastically in a Sentence

a community production of the classic musical that featured fantastically bad singing

Recent Examples on the Web

Though the plating could have been better, the dish was prepared fantastically. —Miguel Otárola, Denver Post, 4 Dec. 2025

The change is fantastically small—the equivalent of removing a single light bulb from a board of 10,000 of them, according to Natalie Batalha, former Kepler mission director. —Jeffrey Kluger, Time, 1 Dec. 2025

Neeson, with that gravelly affect honed over years of geriatric action movies, is fantastically deadpan as Drebin, Pamela Anderson’s scat-singing face is excellent, and the sheer volume of jokes, not to mention the hit-to-miss ratio, is a marvel. —Alison Willmore, Vulture, 1 Dec. 2025

Your friend and frequent collaborator Ayo Edebiri guest stars in the second episode as a fantastically unhinged pop star. —Mikey O'Connell, HollywoodReporter, 21 Nov. 2025

Word History

Etymology

fantastical + -ly entry 2

First Known Use

1543, in the meaning defined at sense 1

Rhymes for fantastically

• drastically
• plastically
• elastically
• sarcastically
• enthusiastically