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

On the edges of the creeks there was a wild mass of flowers which looked more like art than nature, so profusely and fantastically were their vivid colors blended together. —Literary Hub, 21 Apr. 2026

Not to be outdone, the amazing Tessa Thompson turns in a fantastically free-wheeling performance as Cass' artist girlfriend, Detroit. —Debby Wolfinsohn, Entertainment Weekly, 13 Apr. 2026

My kids went to a private school with the children of a real Russian oligarch and others whose families were fantastically rich. —Frank Langfitt, NPR, 4 Apr. 2026

Before Bridgegate, there was Tollgate in 2011, when Baroni went behind the back of the executive director to conspire with Christie to concoct a phony and fantastically too high 50% toll hike plan, that Christie could knock back and be the hero. —New York Daily News Editorial Board, New York Daily News, 26 Jan. 2026

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